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KengaRu [80]
3 years ago
15

A bookstore costs $90 a day to keep open, and it spends $13 for each book-

Mathematics
1 answer:
enot [183]3 years ago
7 0

Answer:

n = 30

Step-by-step explanation:

since it cost 90 to keep open, the equation needs to equal 90

90 = ?

because it cost 13 for a book and x equals the amount of books

90 = -13x

because you make 16 for each book

90 = -13x + 16x

now you can simply

90 = 3x

x = 30

so the answer is 30

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Naddika [18.5K]

Answer:

y int is 20

slope = 2

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What was the percent increase of China's
Rom4ik [11]

The percentage increase China's population from 1970 to 1995 is: 56.25%.

<h3>How to Calculate Percentage Increase?</h3>

Percentage increase = (Final Value - Original Value)/Original value × 100.

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4 0
2 years ago
Solve for the following equation step by step and justify your steps when using an exponential property.
mel-nik [20]

x = \frac{5}{7}

using the ' laws of exponents '

• a^{m} × a^{n} = a^{( m + n )}

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equating the exponents since bases on both sides are 7

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4 0
3 years ago
Round each mixed number to the nearest whole number and then estimate the product
AnnZ [28]
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I hope this helped! :)
3 0
3 years ago
How to find the value of x 103-4x=71
jasenka [17]

Answer:

x= 8

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3 years ago
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