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2 years ago

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:

#LearnwithBrainly

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2 years ago

In a poker hand, John has a very strong hand and bets 5 dollars. The probability that Mary has a better hand is .04. If Mary had

mr_godi [17]

Answer:

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2 years ago

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Step-by-step explanation:

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Read 2 more answers

Question

monitta

Answer:

$927,154\ people$

Step-by-step explanation:

we have a exponential function of the form

$y=a(b^x)$

where

y is the population of San Francisco

x is the number of years

a is the initial population

b is the base

r is the rate of grown

b=(1+r)

In this problem we have

$r=1.26\%=1.26/100=0.0126$

$b=1+0.0126=1.0126$

ordered pair (6, 870,887)

substitute in the exponential function $y=a(b^x)$

$870,887=a(1.0126^6)$

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$a=807,857\ people$

The exponential function is equal to

$y=807,857(1.0126^x)$

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6+5=11 years

For x=11 years

substitute the value of x in the exponential function and solve for y

$y=807,857(1.0126^{11})$

$y=927,154\ people$

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2 years ago