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Tanzania [10]
2 years ago
11

A bookstore costs $105 a day to keep open, and it spends $12 for each book

Mathematics
1 answer:
Alex2 years ago
4 0

After selling 35 books, the store will break-even.

Step-by-step explanation:

Given,

Cost required per day to keep store open = $105

Amount spent on each book = $12

Let,

n be the number of books.

Total costs = 12n + 105

Selling price of each book = $15

Total revenue = 15n

For braking even;

Costs = Revenue

12n+105=15n\\105=15n-12n\\105=3n\\3n=105

Dividing both sides by 3

\frac{3n}{3}=\frac{105}{3}\\n=35

After selling 35 books, the store will break-even.

Keywords: revenue, cost, division

Learn more about division at:

  • brainly.com/question/10754198
  • brainly.com/question/10771256

#LearnwithBrainly

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The graph of a linear function is shown.Which word describes the slope lf the line?
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ANSWER:
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Given that x+1 is a factor of 3x³-14x²-7x+d, show that d= 10
Alja [10]

Answer:

3x³ - 14x² - 7x + d = (x + 1)(ax² + bx + c)

--------------------------

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= ax³ + bx² + cx + ax² + bx + c

= ax³ + (a + b)x² + (b + c)x + c

--------------------------

ax³ + (a + b)x² + (b + c)x + c = 3x³ - 14x² - 7x + d

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An 8 ft length of 4 inch wide crown molding costs $14. how much will it cost to buy 40 ft of crown molding?
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Answer: $70

 

EXPLANATION

 

Given, for a 4 inch wide crown molding:

8 ft length costs $14

Cost of 40 ft length = ?

 

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To find the cost of 1 ft length,

Divide through by 8

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Now, to find the cost of 40 ft length

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Therefore, it would cost $70 to buy 40 ft of crown molding

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