A bookstore is deciding what price it should charge for a certain book. After research, the store finds that if the book's price is p dollars (where p <= 40), then the number of books sold per month is 120-3p. What price should the store charge to maximize its revenue?

Answers

Answer 1

The store charge that has to be charged should be 20$

How to solve for the charge

First we have to solve for revenue

Revenue = Price x quantity

= p * 120-3p

= 120p - 3p²

The maximum revenue is at the point where p =   - b/2a

Hence we have

-120/2 *-3

= -120/-6

= $20

Hence the amount that has to be charged by the store should be $20

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Related Questions

Write the slope intercept form of the equation of each line.

Answers

Answer:

9) y = -x + 5

10) y = -7/2x - 5

11) y = x - 1

12) y = -5x/3 - 3

13) y = -4x/1

I'm not 100% sure for some of these answers since the pic is a bit blurry, but they're pretty accurate.

John decides to use the method of proportions and similar
triangles to find the height of a tree. He measures the length of the
tree's shadow and finds it is 51 feet long. Then he holds a 12-inch
ruler perpendicular to the ground and finds that it casts an 18-inch
shadow. How tall is the tree?
a. 3 ft c. 76.5 ft
b. 34 ft d. 204 ft

Answers

Answer:

i believe the answer is A please tell me if im wrong

A I’m pretty sure it’s right

Can someone explain how to do this? I'm so confused and I have a test on it tomorrow.

Answers

Answer:

You have to know how to do exponents.

Step-by-step explanation:

For example, 6r2 x 2r6 = 36r x 64r = 2,304r

I am not sure if this is exactly how you do it.

Answer:

Sorry if I'm wrong but...…..

I think the first one is an equation and it's a fraction with powers. (4 and 5).

The next one is a fraction and it is to the power of the number above you have to figure out if you have to multiply the powers with the number under it add them and divide or multiply them by the other number.

The third one is a multiplication problem you have to figure out what "r" is to figure it out you have to do 6 to the 2nd power to get r and you have to do 2 to the 6th power to get the other r. Then multiply the numbers together tp get the answer.

Hope this helps!

- Hannah

If ABC undergoes a dilation of scale factor 3 centered at the origin, what will be the coordinates of the image of point B?

Answers

Answer:

just use the original coordinates and add 3 too it . I am a mathematician and a math tutor

Step-by-step explanation:

the answer is (2,6) ....

Please answer B and C as fast as possible! Tysm <3

Answers

Answer:

Step-by-step explanation: BC = 3.75 and CD is 7.5

Answer to B and C
BC=3.75 and CD=7.5

Which of the following is NOT a characteristic of eukaryotes? A. unicellular B.has a nucleus C. has membrane-bound organelles D.multicellular
be quick plz

Answers

Answer:

D. Multicellular

Step-by-step explanation:

Because eukaryotes are single cell..

Answer:

C

Step-by-step explanation:

well eukaryotes are able to be either unicellular, or multicellular so A and D ore not correct.

eukaryotes have a nucleus so B is wrong as well.

CAN SOMEONE HELP ME PLEASE!!!!!!!!!!!

Answers

Answer:

40m

Step-by-step explanation:

Multiply 20 Times and 8 miles

It’s 40m
Step to step explanation:
Multiply 20 times and 8 miles

a triangle has a side length of 6 centimeters , 8 centimeters, and 12 centimeters the triangle is to be enlarged by a scale factor of 2.5 what will be the length of the longest side in the new triangle
A 9 cen
B 12 cen
C 30 cen
D 18 cen

Answers

Answer:

30 centimeters

Step-by-step explanation:

12 times 2.5 = 30

Answer:

C. 30 centimeters

Step-by-step explanation:

Alice spins the spinner 2 times.




What is the probability that the spinner stops on A and then B, or on B and then A?


1/9

2/9

1/3

5/9

Answers

Answer:

2/9

Step-by-step explanation:

because there is 3 so 3x3 =9

there is 2 spots where they want it to land

Maria decides to use the method of proportions and similar
triangles to find the height of a tree. She measures the length of the
tree's shadow and finds it is 44 feet long. Then she holds a 12-inch
ruler perpendicular to the ground and finds that it casts an 8-inch
shadow. How tall is the tree?
a. 5.5 ft c. 66 ft
b. 29 ft d. 132 ft

Answers

Answer:

b

Step-by-step explanation:

The answer is B....29

What is the measure of

Answers

122 degrees is the answer

Answer:

b. 120

Step-by-step explanation:

the 60 degree angle is supplementary to angle m. 180-60=120

Use the table to answer the following question.

Answers

Answer:

for every 1 on the top they are adding 2 on the bottom

What is the best way to describe the changes to the characters in the story "Thank You, Ma'am?"

A- Each character is viewed in a different way by the time the story concludes.
B- Each character becomes a different person once the rising action is complete.
C- Mrs. Jones changes from a big scary woman into a kind, warm-hearted character.
D-The boy changes from a bad purse-snatcher to a grateful visitor in the woman's home. help plz!!

Answers

Answer:

A- Each character is viewed in a different way by the time the story concludes

Step-by-step explanation:

A is the correct answer

18 animals at the city zoo are nocturnal. If these animals 9/100 of all animals at the zoo, how many animals are at the zoo?

Answers

Answer:

200 animals

Step-by-step explanation:

9/100 = 9% or 0.09

18=0.09x

x=200

or you can use proportions:

18/x=9/100

x=200

Answer:

200 animals

Step-by-step explanation:

Please help me and explain. I don't understand.

Answers

Answer:

A

Step-by-step explanation:

Answer:

yes they are similar.

Step-by-step explanation:

A painting, square in shape, is placed in a wooden frame with width of 10% of the length of the side of the paining. The painting was enlarged by 10%. By what percent is the new frame bigger than the original frame if the width of the frame remains the same? I will mark BRAINLIEST


Answers

Answer:

Step-by-step explanation:

The new frame is 8.3

Answer:

Yes, the new frame be 8% bigger than the original frame if the width of the frame remains the same

Step-by-step explanation:

HOPE THIS HELPS YOU

Follw me = 10 thanks

Mark as brainliest = 10 thanks

1 thanks to me = 2 thanks

Find the unit rate: 340 birds seen in 5 hours

Answers

340/5 = 60 tjhflkjernf eworigfj oaeiwrjf okrijfg [poeirjg [apwoierj a[wporgj [aopirwjgj [paoirweij oierj [apiowrj [irjg

Answer:

68 b/h (birds per hour)

Step-by-step explanation:

340 ÷ 5= 68

What are the coordinates of the image of vertex C after a dilation with center (0, 0) and scale factor 2? A. C’(3, 4) B. C’(4, 6) C. C’(6, 2) D. C’(6, 4)

Answers

Answer:

I think it is answer A

Step-by-step explanation:

i don't know

Answer:A I’m sure

Step-by-step explanation:

Brittany bought a dress that cost $22.50. If the sales tax is 6.5%, how much tax did she pay? PLZZ ITS TIMED

Answers

Start with your $22.50 subtotal (cost without tax)

Then, solve for 6.5% of $22.50

Set your equation up like so: 6.5/100=x/22.50

Cross multiply then you should have 100x=146.25

Solve to get 1.4625% (If you need it rounded, it's 1.5%)

1.5% ----> $1.46

$22.50+$1.56=$23.96

She spent $23.96

I'm pretty sure the answer's $1.46.

($1.46 is the amount of tax, not the total)

Hope this helped, please mark brainiest!

PLS DO ASAP I WILL GIVE BRIANLEST

Answers

Answer: Hope this helps even im not 100% sure

12. 2.3

13. 4/13

14. 8 7/11

15. 0.78

16. YES because pi is a repeating decimal

(Give me brainliest?)

HELPPPP PLEASE. Ill give a brainliest I guess

Answers

Answer: It’s D. I got this on my test, I also multiplied to be sure.

Pls help me! And thank you

Answers

Answer:

38°

General Formulas and Concepts:

Geometry

Vertical Angles Theorem - vertical angles are congruent

Step-by-step explanation:

From the graph given, we see that angle x° and angle 38° are vertical.

Therefore, using the Vertical Angles Theorem, we can say that they are congruent and x = 38°.

I NEED HELP ASAP PLZ ILL GIVE BRAINLIEST..... I PROMISE!

Answers

Answer:

First what are the choices

Step-by-step explanation:

Also I believe that Blake has more grams than Chance or chase whatever If im wrong let me know dont take it against me

Answer: i thank it is

5.67 and 8.1

Step-by-step explanation:

State if each pair of ratios forms a proportion....EXPLAIN AS WELL PLS!!!
1.) 10/16 and 2/4
2.) 2/3 and 8/15
3.) 10/9 and 2/3
4.) 16/12 and 2/4
5.) 4/2 and 16/8
6.) 6/16 and 3/4
7.) 9/6 and 3/2
8.) 9/12 and 3/4
9.) 10/12 and 2/3
10.) 4/2 and 20/6
11.) 4/2 and 24/8
12.) 4/3 and 16/18

Answers

Answer:

1. 4/12 , 6/8

2. 16/12 , 3/4*

3. 3/2 , 15/14

4. 10/16 , 5/8

10/16 = 5/8

Which ratio forms a proportion with 9/15?

1. 6/10

2. 16/21

3. 36/50

4. 45/70

9/15 = 3/5 which is 6/10

A textbook weighs 2.5 pounds. How many kilograms does the textbook weighs? Round your answer to the nearest tenth of a pound. 1 kg = 2.2 lb

1. 1.1 kg

2. 1.8 kg

3. 5.5 kg

4. 4.7 kg

2.5 lbs * (1 kg/2.2 lbs) =

Solve the proportion using number sense. 2/8 = x/ 48

1. 6

2. 12

3. 16

4. 8

8 * 6 = 48

so what is 2 times 6 ?

or another way

1/4 * 48 = 12

Solve the proportion using cross products. 18/20 = k/110

1. 99

2. 122

3. 3.3

4. 2.9

20 k = 18*110

2 k = 18 *11

k = 9 * 11

Are the ratios 8/12 and 10/25 proportional? Explain

8/12 = 2/3

10/15 = 2/3 so no way 10/25 is 2/3

A 10-acre field produced 750 bushels of corn. At the rate, how much corn can be produced from a 14-acre field?

14 acres * ( 75 bushels/acre)

or

10/750 = 14/x

Step-by-step explanation:

hope this help and plz mark me a brainiest

Multiply by the same number on each side.

1 no
2 no
3 no
4 no
5 yes
6 no
7 yes
8 yes
9 no
10 no
11 no
12 no

Hope this helps! ❤️

Giving brainliest, and 50 points pls help

Answers

Answer:

1.x−7=4

Answer:

x=11

2.9+x=14

Answer:

x=5

3.x+7=16

Answer:

x=9

4.x+3=−18

Answer:

x=−21

5.17+x=18

Answer:

x=1

6.23=x−13

Answer:

x=36

7.4=x+12

Answer:

x=−8

8.19=x−6

Answer:

x=25

9.x−2=21

Answer:

x=23

10.x−7=−26

Answer:

x=−19

11.11=x+5

Answer:

x=6

Step-by-step explanation:

Hope I helped

Brainliest plz

Carly is pouring sand into a rectangular container with dimensions of 4 1/2 inches by 3 1/2 inches by 2 inches. What is the maximum number of cubic inches of sand that will fit into the container?

Answers

The answer is 31.5 in.^3 because
4.5 • 3.5 • 2 = 31.5in.^3

Answer:

31.5

Step-by-step explanation:

4 1/2 x 3 1/2 equals 15.75. And 15.75 x 2 equals 31.5

which pints are solutions tot he equation y=11x?
select all that apply

(-9,99)
(11,144)
(3,33)
(-17,-187)
(3/11,3)

Answers

(3,33),(-17,-187),(3/11,3)

The solutions of the equation y = 11x are;

⇒ (3, 33)

⇒ (-17, -187)

⇒ (3/11, 3)

What is Equation of line?

The equation of line passing through the points (x₁ , y₁) and (x₂, y₂) with slope m is defined as;

y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

The equation is,

y = 11x

Now,

The solutions of the equation is always satisfy the equation of line.

So, we check all the points as;

First point (x , y) = (- 9, 99)

Substitute in the equation, we get;

y = 11x

99 = 11 x - 9

99 ≠ - 99

Thus, This is not a solution.

Second point (x , y) = (11, 144)

Substitute in the equation, we get;

y = 11x

144 = 11 x 11

14 ≠ 121

Thus, This is not a solution.

Third point (x , y) = (3, 33)

Substitute in the equation, we get;

y = 11x

33 = 11 x 3

33 = 33

Thus, This is a solution.

Fourth point (x , y) = (- 17, - 187)

Substitute in the equation, we get;

y = 11x

- 187 = 11 x - 17

- 187 = - 187

Thus, This is a solution.

Fifth point (x , y) = (3/11, 3)

Substitute in the equation, we get;

y = 11x

3 = 11 x 3/11

3 = 3

Thus, This is a solution.

Therefore, The solutions of the equation y = 11x are;

⇒ (3, 33)

⇒ (-17, -187)

⇒ (3/11, 3)

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Please help with these two math questions!!!

Answers

Answer:

&

Step-by-step explanation:

12.) If one ticket is $9.50, and 879,575 tickets were sold, the two need to be multiplied. 9.5 * 879,575 = 8355962.50

So the total profit was $8,355,962.50

If each theater made an equal profit of that total, then just divide it by 755, but if that's not the case, then don't do that.

13.) If the boat can carry 582 passengers, and 13,105 people had ridden the first boat, then you have to divide the number of people riding the boat by the passenger count to determine the amount of trips made.

13,105 / 582 is 22.5, but you can round it to 23, because half of a trip isn't going to be made. I'm not entirely sure when the second question means, so... sorry, can't answer that one.

Hope this helps somewhat!

PLEASE ANSWER DONT ANSWER IF YOU DO NOT KNOW

Answers

Answer:

6

Step-by-step explanation:

The first dot can tell you that there is a 6:1 ratio and this it is true for all, meaning if you have a 6:1 ratio, and you know 6 is Gallons of white and the one is from the orange.

108 the number of gallons of white paint is mixed with 1 gallon of orange paint

What is 6 1/3 1/6 Equal to?

A.6

B.9

c.12

D.19

E.38

Answers

Answer:

c i think

Step-by-step explanation:

Answer:

E

Step-by-step explanation:

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