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cricket20 [7]
3 years ago
9

Andre owns a computer backup service. He charges his customers $2.50 for each backup CD. His expenses include $875 for the CD re

cording equipment and $0.35 for each blank CD. Which equation could Andre use to calculate his profit p for the recording of n CDs?
Mathematics
1 answer:
alukav5142 [94]3 years ago
3 0

Answer:

p =2.15n - 875

Step-by-step explanation:

Given

CD_s= n

Charges = 2.50 per CD

<u>Expenses</u>

E_1 = 875

E_2 = 0.35 per CD

Required

The profit (p)

First, calculate the total income on n CDs

Total = Charges * n

Total = 2.50 * n

Total = 2.50n

Next, the expenses on n CDs

Expenses = E_1 + E_2 * n

Expenses = 875 + 0.35 * n

Expenses = 875 + 0.35n

The profit (p) is:

p = Total - Expenses

p =2.50n - (875 + 0.35n)

Open bracket

p =2.50n - 875 - 0.35n

Collect like terms

p =2.50n -  0.35n - 875

p =2.15n - 875

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The ratio is given as:

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Rewrite as:

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Express as sum

Sum = 11x + 18x + 18x

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Divide both sides by 47

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