(PLS HELP, FINAL QUESTION!!!)
which of the following lists the correct values of a, h, and k for the function: f(x)=n^2+6

A) a = 1, h = 1, k = 6
B) a = 1, h = –1, k = 6
C) a = 1, h = 0, k = 6
D) None of the choices are correct.

Answers

Answer 1

Answer:

N^2+6 is in standard form, which is in ax^2+bx+c,

in order to get it to vertex form, which y=a(x-h)^2+k, we need to find the vertex, through x=-b/2a, in this case:

x=-0/2(1)=0, so h=0, then plug 0 in for n,

0^2+6=6,

which makes k=6,

therefore, the answer is c.

as for a, the value of a is constant in all forms, whether standard, vertex or factored, making a=1

Brainliest pls


Related Questions

The one-time fling! Have you ever purchased an article of clothing (dress, sports jacket, etc.), worn the item once to a party, and then returned the purchase? This is called a one-time fling. About 5% of all adults deliberately do a one-time fling and feel no guilt about it! In a group of six adult friends, what is the probability of the following? (Round your answers to three decimal places.)

Answers

Using the binomial distribution, the probability of no one having done a one time fling is of 0.735 = 73.5%.

Binomial distribution

The mass density formula for the probability of x successes is:

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The parameters of the formula are given as follows:

n is the number of trials of the experiment.p is the probability of a success on a single trial of the experiment.

In the context of this problem, the values of the parameters are as follows:

p = 0.05, as about 5% of all adults deliberately do a one-time fling and feel no guilt about it.n = 6, as there are six adult friends in the group.

The probability that no one has done a one time fling is P(X = 0), hence the probability is calculated as follows:

P(X = 0) = (0.95)^6 = 0.735 = 73.5%.

Missing information

The problem asks for the probability that no one has done a one time fling.

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14. PR is the diameter of the circle with centre O. If mZPRQ = 65°. What will be the measure of
mZPOQ?
A. 65⁰
B. 90⁰
C. 130⁰
D. 150⁰

Answers

So basically a chord subtends double the angle at the centre then it does at the circumference
Here PQ chord subtends 65 on the circumference=> it will subtend 130 on the center
Hence answer is (c)

A diagram of the side of Robert's barn is shown. If he decides to paint one side of the barn, how many square feet will Robert paint?

1. 254.5 ft^2
2. 310.5 ft^2
3. 391 ft^2
4. 805 ft^2

Answers

Robert will paint 310.5 square ft

The side of Robert's barn contains a triangle and a rectangle of which the dimensions are given in the diagram.

If Robert paint one side of the barn, then he needs to paint the triangle as well as the rectangle. So we need to find the area of the triangle and rectangle first.

For the triangle, base = 23 ft

height = 7 ft

Area of the triangle = 1/2 bh

                                 = 1/2 x 7 x 23

                                 = 80.5 square ft.

For the rectangle, length = 23 ft

width = 10 ft

Area of the rectangle = length x width

                                    = 23 x 10

                                    = 230 square ft.

Area Robert needs to paint = Area of the triangle + Area of the rectangel

                                              = 80.5 + 230

                                              = 310.5 square ft.

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Identify the vertex: y = (x+10)2+ 2 a. (10,2) b. (-10, -2) c. (-10,2) ) d. (10, -2)

Answers

Given a quadratic equation in vertex form

[tex]y=a(x-h)^2+k[/tex][tex]\begin{gathered} \text{ wh}ere\text{ a, h, and k are constants, } \\ \text{then the point (h, k) is the vertex of the function} \end{gathered}[/tex]

In our case,

[tex]y=(x+10)^2+2[/tex]

h = -10, and k= 2

Therefore the vertex is (-10, 2)

I need whit math thats all(x-2) +(x+6)

Answers

To simplify the expression (x-2) +(x+6), you have to follow these steps:

1.Get rid of the parentheses:

(x-2) +(x+6)

x -2 + x + 6

2. Combine like terms:

x + x - 2 + 6

2x + 4

So the answer is 2x + 4

I would rlly appreciate if someone helped me out on this please!

Answers

Answer:

14.7

Step-by-step explanation:

Let's say the width is x

So volume would be 24 × 2x × x = 10368

24 × 2x² = 10368

2x² = 10368 / 24 = 432

x² = 216 , width can't be negative so

x = 14.6969... ~~ 14.7

1
-2-(-7) = ?
NEXT
BOOKMARK

Answers

Answer:

5

Step-by-step explanation:

negetive two minus negative seven equal to five

A jet’s speed in still air is 240 mph. One day it flew 700 miles with a tailwind (the wind pushing it along) and then returned the same distance against the wind. The total flying time was 6 hours. Find the speed of the wind.

Answers

Speed of the wind for jet speed in still air 240mph and jet covers 700 miles with tailwind and same distance against the wind in total time of 6 hours is equal to 40mph.

As given in the question,

Given data:

Jet speed in still air = 240mph

Let x be the speed of the wind.

Speed with tail wind = 240 +x

Distance covered with tail wind = 700miles

Time taken by jet with tail wind

= Distance/ speed

= 700 / (240 +x)  __(1)

Speed against the wind = 240 - x

Distance covered against the wind = 700miles

Time taken by jet against the wind

= Distance/ speed

= 700 / (240 - x)  __(2)

Total time taken is 6 hours

[700 / (240 +x)] + [700 / (240 - x)] = 6

⇒ 700( 240 -x + 240 + x) = 6 (240 +x)(240 - x)

⇒ 700 ( 480) = 6 ( 240² -x²)

⇒ 700 (80) = 57600 -x²

⇒ x² = 57600 - 56000

⇒ x² = 1600

⇒ x = √1600

⇒ x= 40 mph

Therefore, speed of the wind for jet speed in still air 240mph and jet covers 700 miles with tailwind and same distance against the wind in total time of 6 hours is equal to 40mph.

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Given vectors a= (1, - 4) and b = (2, 5), find –2a+5b.Write your answer in component form.- 2a + 5b =?

Answers

We are given the following two vectors

[tex]\begin{gathered} a=<1,-4> \\ b=<2,5> \end{gathered}[/tex]

We are asked to find the following

[tex]-2a+5b[/tex]

First, multiply the vector a with the scaler -2 to get -2a

[tex]\begin{gathered} -2a=<-2\cdot_{}1,-2\cdot-4> \\ -2a=<-2,8> \end{gathered}[/tex]

Now, multiply the vector b with the scaler 5 to get 5b

[tex]\begin{gathered} 5b=<5\cdot2,5\cdot5> \\ 5b=<10,25> \end{gathered}[/tex]

Finally, add -2a and 5b to get -2a+5b

[tex]\begin{gathered} -2a+5b=<-2,8>+<10,25> \\ -2a+5b=<-2+10,8+25> \\ -2a+5b=<8,33> \end{gathered}[/tex]

Therefore, the resultant vector in component form is

[tex]-2a+5b=<8,33>[/tex]

Car 1 leaves point A at 5:30 p.m., driving due south atan average speed of 35 mph. Car 2 leaves point A at6:30 p.m., driving due north at an average speed of 45mph. How far apart will the drivers be at 9:30 p.m.?

Answers

Answer:

Explanation:

• Car 1 leaves point A at 5:30 p.m., driving due south at an average speed of 35 mph.

,

• Car 2 leaves point A at 6:30 p.m., driving due north at an average speed of 45 mph.

At 9:30 pm, the time taken by the cars is:

[tex]\begin{gathered} Car\;1:9:30-5:30=4\text{ hours} \\ Car\;2:9:30-6:30=3\text{ hours} \end{gathered}[/tex]

The distance covered by each car is:

[tex]\begin{gathered} Distance=Speed\times Time \\ \text{Car 1's distance}=35\times4=140\text{ miles} \\ \text{Car 2's distance}=45\times3=135\text{ miles} \end{gathered}[/tex]

Since car 1 drives due South and Car 2 due North of point A:

Therefore, the distance between the drivers at 9:30 p.m. will be:

[tex]Distance=140+135=275\text{ miles}[/tex]

The two drivers are 275 miles apart at 9:30 pm.

mario's school is also planning a smaller rectangular are as a sitting spot. A scale drawing of the sitting sot is shown. redraw the sitting spot on the grid at a scale of i grid unit/4 feet.

write and simplify the ratio of the new scale

Answers

The ratio of the new scale that we are to be having is going to be 1/2

How  to simplify the new scale of the grid

we have the ratio to be 1 grid unit / 2 ft

the new scale ratio is given as 1 grid unit / 4 ft

We have to divide the ratio of the original scale to the new scale that we have here

This would be ( 1 grid unit / 4 ft ) / ( 1 grid unit / 2 ft)

This can be written as

1/4 * 2/1

when we rewrite it we would have 2/4

= 1/2

This is 1 unit 2 feet

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License plates in a particular state are to consist of 2 digits followed by 4 uppercase letters. ​a) How many different license plates can there be in this state if repetition of letters and numbers is​ permitted? ​b) How many different license plates can there be in this state if repetition of letters and numbers is not​ permitted? ​c) How many different license plates can there be in this state if the must be ​, and repetition of letters and numbers is not​ permitted? ​d) How many different license plates can there be in this state if the first digit cannot be ​, and repetition of letters and numbers is not​ permitted?

Answers

a)Total different number plates will be 45697600

b) Total different number plates will be 32292000

What is permutation and combination?

In a combination, the elements of the subset can be listed in any order. In a permutation, the elements of the subset are listed in a specific order.

Arranging people, digits, numbers, alphabets, letters, and colors are examples of permutations. Selection of menu, food, clothes, subjects, the team are examples of combinations

We are given that license plate allows 2 digits and 4 upper case letters

a) repetition is allowed

hence for 2 numbers we have 10*10=100 choices

Also letter are allowed 26*26*26*26=456976 choices

And Hence total choices are 456976*100=45697600 ways

b) Repetition is not allowed

hence for 2 numbers we have 10*9=90 choices

Also letter are not allowed 26*25*24*23= 358800 choices

And Hence total choices are 456976*100=32292000 ways

Hence

a)Total different number plates will be 45697600

b) Total different number plates will be 32292000

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the expression negative one eighth j plus two thirds minus the expression five thirds j plus nine twelfths


negative 37 over 24 times j minus 17 over 12

negative 37 over 24 times j plus 17 over 12

43 over 24 times j plus 1 over 12

negative 43 over 24 times j plus negative 1 over 12

Simplify the expression.

the expression negative one eighth j plus two thirds minus the expression five thirds j plus nine twelfths

negative 37 over 24 times j minus 17 over 12
negative 37 over 24 times j plus 17 over 12
43 over 24 times j plus 1 over 12
negative 43 over 24 times j plus negative 1 over 12


Which expression is equivalent to 3(−4.5b − 2.1) − (6b + 0.6)?

19.5b + 1.5
−19.5b − 1.5
−19.5b − 6.9
19.5b − 6.9

Answers

A) Simplification of the given Algebraic Expression is; [-⁴³/₂₄j + (-1)]/12

B) The equivalent expression to 3(−4.5b − 2.1) − (6b + 0.6) is - 19.5b - 6.9

How to simplify Algebraic Expressions?

A) We want to simplify negative one eighth j plus two thirds minus the expression five thirds j plus nine twelfths. This would be expressed as;

-1/8j + 2/3 - (5/3j + 9/12)

= -1/8j + 2/3 - 5/3j - 9/12

= -1/8j - 5/3j + (2/3 - 9/12)

= (-3j-40j / 24 + (8-9) / 12

= [-⁴³/₂₄j + (-1)]/12

B) The expression equivalent to 3(−4.5b − 2.1) − (6b + 0.6)

Expand the brackets to get;

-13.5b - 6.3 - 6b - 0.6

= -13.5b - 6b - 6.3 - 0.6

= - 19.5b - 6.9

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Suppose that g(x) = f(x) + 5. Which statement best compares the graph ofg(x) with the graph of f(x)?

Answers

We are told that

[tex]g(x)=f(x)+5[/tex]

If we were given the graph of f(x), note that in this equation we add 5 to the value of f(x) to find the value of g(x). So, in terms of the graph, as we are taking the final value of f and adding 5, this means that we are moving the graph of f 5 units up. That is the graph of g(x) is the graph of f(x) shifted 5 units up

7=1/4ax, solve for a

Answers

The given expression is

[tex]7=\frac{1}{4}ax[/tex]

Solving for a means that we need to isolate that variable.

First, we need to multiply the equation by 4

[tex]7\cdot4=4\cdot\frac{1}{4}ax\rightarrow28=ax[/tex]

Second, we divide the equation by x

[tex]\frac{28}{x}=\frac{ax}{x}[/tex]

Therefore, the answer is

[tex]a=\frac{28}{x}[/tex]

I need help with this question but no one is helping me! Can someone please help me​

Answers

Step-by-step explanation:

Chance to roll even number on one dice is 1/2 so

[tex] \frac{1}{2} \times \frac{1}{2} = \frac{1}{4} [/tex]

a girl (who liked riddles) was asked how old she was, she responded "in 2 years I will be twice as old as I was 5 years ago". how old is she now?

Answers

Given data:

The expression for the age of the girl after two year is,

x+2

The age of girl 5 year ago is,

x-5

According to the given statement of the question.

x+2=2(x-5)

x+2=2x-10

x=12

Thus, the present age of the girls is 12 years old.

C>0, |u|=c is equivalent to u=

Answers

|u|=c is equivalent to u = c or u = -c.

Given that c > 0.

i.e., c is a positive number.

Then |u| = c. That is, absolute value of u = c, a positive number.

An absolute value function is defined by,

 |u| = { u   ; if u ≥ 0

        { -u   ; if u < 0

The absolute value of any number, Positive or negative, is always a positive number.

So here |u| = c, with c > 0.

Comparing with the definition of absolute value function, c is either u or -u.

More clearly, c = u, when u ≥ 0 or c = -u , when u < 0.

Hence the value of c depends on u.

Thus,  |u|=c is equivalent to u = c or u = -c.

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Suppose that IQ scores have a bell-shaped distribution with a mean of 101 and a standard deviation of 14. Using the empirical rule, what percentage of IQ scores are at least 73? Please do not round your answer.

Answers

Answer:

Explanation:

From the information given,

mean = 101

standard deviations = 14

We need to find the number of standard deviations between 73 and the mean.

Number of standard deviations = (73 - 101)/14 = - 28/14 = - 2

It is 2 standard deviations from the mean. According to the empirical rule, 95% of the population lies between 2 standard deviations of the mean. The required area is to the right of 2 standard deviations since we want to find the least score. Thus, the probability of having IQ scores are at least 73 is

We would convert to percentage by multiplying by 100

SpongeBob spins the spinner to the left. What is the probability that the spinner lands on a number greater than 6?

Answers

SpongeBob spins the spinner to the left. What is the probability that the spinner lands on a number greater than 6?​

we know that

The total numbers in the spinner are 10

The numbers that are greater than 6 are (7,8,9 and 10)------> 4 numbers

so

To find out the probability, divide the total numbers that are greater than 6 by the total number

therefore

P=4/10

Percent

P=4/10(100)

the answer is

P=40% o P=4/10 or P=0.4

4. Describe the transformation from the parent graph of y - 4 = – 2(x – 3)?. Graphboth the parent graph and the transformed graph on the grid provided. Plot at leastthree distinct points for each.

Answers

Describe the transformation from the parent graph of y - 4 = – 2(x – 3)^2. Graph

both the parent graph and the transformed graph on the grid provided. Plot at least

three distinct points for each.

we have that

the parent function is

y=x^2

Is a vertical parabola open upward with the vertex at (0,0)

the transformed function

is

y-4=-2(x-3)^2

y=-2(x-3)^2+4

Is a vertical parabola open downward with vertex at (3,4)

so

The transformations are

1) Reflection over x-axis

Rule is

(x,y) ------> (x,-y)

y=x^2 ------------------> y=-x^2

2) Vertical Dilation with a scale factor of 2

Rule

(x,y) --------> (x,2y)

y=-x^2 ----------> y=-2x^2

3) Translation 3 units at right and 4 units up

Rule is

(x,y) --------> (x+3,y+4)

y=-2x^2 --------> y=-2(x-3)^2+4

see the graph to better understand the problem

i need helpppp plsssssss

Answers

51 is the answer and I hope that helps

Find the y-intercept of the line graphed by the equation 1/2x + y = 7. (0, 14) (14, 0) (7, 0) (0, 7)

Answers

The y-intercept of the line graphed by the equation [tex]\frac{1}{2} x+y=7[/tex] is (0,7)

Option (D) is correct.

The x-intercept is the point where the line crosses the x-axis, and the y-intercept is the point where the line crosses the y-axis.

The given equation is [tex]\frac{1}{2} x+y=7[/tex]

Converting the equation in Slope-intercept form, we get

[tex]y=-\frac{1}{2} x+7[/tex]                   ...(1)

Now, to find the y-intercept, substitute x = 0 in the equation and solve for the value of y

Putting x = 0 in equation (1), we get

[tex]y=-\frac{1}{2} (0)+7[/tex]

[tex]y=7[/tex]

Therefore, the y-intercept of the line will be (0,y) i.e., (0,7)

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a box is filled with 3 red cards, 6 Blue cards, and 6 green cards. A card is chosen at random from the box. what is the probability that it is a red or a green card? write your answer as a fraction in simplest form

Answers

Probability of red or green card = 3/5

Explanation:

Number of red cards = 3

Number of blue cards = 6

Number of green cards = 6

Total number of cards = 6 + 6 + 3 = 15

Probability of red or green card = Probability of red card + Probability of green card

Probability of red card = number of red cards/total number of cards

Probability of red card = 3/15

Probability of green card = number of green cards/total number of cards

Probability of green card = 6/15

Probability of red or green card = 3/15 + 6/15

Probability of red or green card = 9/15

In simplest term:

Probability of red or green card = 3/5

Answer:

85% but in a fraction 17/20

Step-by-step explanation:

Could you please set it up in the form of "systems of equations" meaning, set to different equations with "x" and "y" ??
That is what they want me to do in class.

Answers

There are various types of equation systems, including linear, non-linear, and multiple or single-variable systems.

Explain the System of equations?

A set of two linear equations with two variables is a system of linear equations.

ax + by = C

A set of two or more equations in two or more variables that includes at least one nonlinear equation is referred to as a system of nonlinear equations. A nonlinear equation can be written as ax+by+C≠0 or ax + b y + C ≠0.

The equation for a linear equation in one variable is written as ax+b = 0, where a and b are two integers, and x is a variable. This equation has only one solution.

Ex: ax+b = 0

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which of the following is a function. then graph the function.

Answers

A relationship is a function if and only if for each input, there exists only one output i.e an input cannot have two or more outputs.

We can determine which of the relationship is a function by plotting a graph of the relationship.

The only correct option is the relationship:

[tex]y=x^2[/tex]

The graph of the function is shown below:

Rewrite the polynomial .22 – 52 + 6 as 2? + m2 + n2 +6, where m. n = 6 and m +n=-5. What are the values of m and n?

Answers

Answer:

m = -2 and n = -3

Explanation

Given the polynomial

x^2 - 5x + 6

Rewrite as x^2 +mx + nx + 6

x^2 - 2x - 3x + 6

Compare

mx = -2x

m = -2

Similarly;

nx = -3x

n = -3

Hence m = -2 and n = -3

At the local food stand, the vendor sells small drinks for $1.25 each and large drinks for $2.50 each. They sold 155 drinks today and made $265. How many small drinks and how many large drinks did they sell?

Answers

Answer:

98 small drinks and 57 large drinks.

Explanation:

Let's call x the number of small drinks and y the number of large drinks.

If they sold 155 drinks, we can write the following equation:

x + y = 155

In the same way, they made $265, so

1.25x + 2.50y = 265

Because each small drink cost $1.25 and each large drink cost $2.50.

Now, we can have the following system of equations

x + y = 155

1.25x + 2.50y = 265

Solving the firs equation for y, we get:

x + y - x = 155 - x

y = 155 - x

Replacing this on the second equation:

1.25x + 2.50y = 265

1.25x + 2.50(155 - x) = 265

Then, solving for x, we ge:

1.25x + 2.50(155) - 2.50(x) = 265

1.25x + 387.5 - 2.50x = 265

-1.25x + 387.5 = 265

-1.25x + 387.5 - 387.5 = 265 - 387.5

-1.25x = -122.5

-1.25x/(-1.25) = -122.5/(-1.25)

x = 98

Finally, we can find the value of y replacing x = 98

y = 155 - x

y = 155 - 98

y = 57

Therefore, they sell 98 small drinks and 57 large drinks.

need help!! algebra 1

Answers

Answer:

f(1)= -3

Step-by-step explanation:

what f(1) means is when x is 1 what is y. I dont see the graph labeled so im just assuming that the graph is going by ones. So what i did was i found where x is one and then i checked at what point did the line match with the y axis which was 3 points below 0 on y axis ( disclaimer if the graph isnt going by ones then its going to be a different answer, but you can use the same process to find it.

The cost of a Turkish cloth varies jointly as the length and width of the cloth. If the cost is TL3848 for an 8 ft by 13 ft cloth, then what is the cost of a 17 ft by 23 ft cloth?

Answers

The cost of the the 17 feet by 23 feet Turkish cloth given the constant of variation is  TL14,467.

What is the cost?

A variable varies jointly if the value of one variable depends on the value of two or more variables. In this question, if the length and width of the cloth increases, the cost of the cloth increases. Also,  if the length and width of the cloth decreases, the cost of the cloth decreases.

The equation that represents joint variation is:

y = kab

Where:

y = dependent variable = cost of the Turkish cloth k = constant of variation a = dependent variable = length of the cloth b = dependent variable = width

TL3848 = k(13 x 8)

k = TL3848 / (13 x 8)

k = $37

The cost of 17 feet by 23 feet cloth :

37 x 17 x 23 = TL14,467

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The bill amount for Diana's brunch was $35.80. She wanted to leave 18% of the total bill as a tip. How much should the tipbe? Select the word or phrase that best completes each of the following sentences about healthcare-associated infections. is a lung infection that occurs when bacteria enter the lungs through a ventilator or other equipment being used to help a patient breathe. A is any inanimate object, such as a doorknob or food, that is capable of spreading infection. can occur when bacteria or viruses enter the bloodstream through devices such as the catheters used to take blood or give fluids. Urinary tract infections can occur when enter(s) the urinary tract through a catheter being used to drain urine from a patients body. What did the second great awakening inspire people to do What is the D-N model of explanation and what are its potential weaknesses?What is a scientific theory? Why should we believe scientific theories?Is there a difference between believing that the Earth is spherical and believing that the Earth is flat?If yes, what is this difference?If not, why not?What makes one belief better than the other? liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . suppose 43. g of hexane is mixed with 85.1 g of oxygen. calculate the maximum mass of water that could be produced by the chemical reaction. round your answer to significant digits. Define a Video Graphics Card.is it an input, processing, storage or output device? Solve for brainliest and 20 points please use the english and metric equivalents to the right, along with dimensional analysis, to convert the given measurement to the unit indicated. in. to cm Create a data set that has 4 values with a mode of 3, a median of 6, and a meanof 10 an athlete consumes large amounts of meat in an effort to build extra muscle tissue. this practice does not work because: Since wY, XZ, and AB intersect at 0, WOA ~ BOY andXOB by the vertical angles theorem. It is given thatAOZ. By the transitive property, BOY XOB.AOZWOAWhat is the conclusion reached by this proof? Which word form correctly completes the following sentence?Leo was surprised when the saleslady told him the price of the car was not _____.A.negotiatedB.negotiableC.negotiationD.negotiating you are studying a chromosome in a new animal species. the presence of what element would make you most confident that a region is facultative heterochromatin and not constitutive heterochromatin? What is the figurative meaning of the moon in the passage? A. sleep B. soothing feelings C. light D. passing of time For which of the following situations is the taxpayer not required to file Schedule H - Household Employment Taxes? asquarematrixiscalledapermutationmatrixifitcon- tains a 1 exactly once in each row and in each column, with all other entries being 0. examples are in and are permutation matrices invertible? if so, is the inverse a permutation matrix as well? How many positive real zeroes does f(x) = x - 4x + 7x + 3x - 5 have? Daniel walks at a speed of 4 miles per hour. Daniel leaves his house at 1:00 p.m. and walks toward a playground exactly 2 miles away. Daniel's mother plans to walk to the playground too. She walks at a speed of 6 miles per hour. At what time should Daniel's mother leave the house to arrive at the playground at the same time as Daniel? Use the table to find the products od the two polynomials. Write your answer in descending order l. Gabriel bought 12 donuts and fritters from thebakery. Donuts cost $1.00 and fritters cost$2.00. Gabriel spent a total of $17.00. Howmany donuts (d) and how many fritters (f) didhe buy?d+f=121d + 2f = 17[?] donuts [?] fritters