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Sonja [21]
3 years ago
8

(02.02)

Mathematics
1 answer:
Virty [35]3 years ago
7 0
We are given the equation P = (20 + 0.5x) + 0.15(20+0.5x)

"Jennifer wants to purchase a book but only has $62.10 to spend."
This means that our P = 62.10 

Plug this in and we get
62.10 = (20+0.5x) + 0.15(20+0.5x)
Now all we have to do is solve for x

distribute the 0.15 in the second set of parenthesis and get
62.10 = 20 + 0.5x + 3 + 0.075x

then add like terms on our right side and get
62.10 = 23 + 0.575x

then subtract 23 from both sides
39.1 = 0.575x

then divide both sides by 0.575
x = 68


Therefore your answer is x = 68 pages.
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