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martinjohnsond079
01.08.2019 •
Mathematics
Aused book store buys a hardback book for $1.50 and then sells it for $5. over time, the store sells the same number of books it buys. the store manager can use the equation p(x)=5x−1.5x to determine the store's profit, p(x), where x is the number of books that the store sells. which statement about the book store is true based on the profit equation? a.the book store makes a profit of $5.00 for each hardback book that is sold. b.the book store makes a profit of $3.50 for each hardback book that is sold. c.the book store makes a profit of $4.50 for each hardback book that is sold. d.the book store sells each hardback book for $3.50
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Ответ:
A used book store buys a hardback book for $1.50 and then sells it for $5. Over time, the store sells the same number of books it buys. The store manager can use the equation P(x)=5x−1.5x to determine the store's profit, P(x), where x is the number of books that the store sells. Which statement about the book store is true based on the profit equation?
Cost Price of book, C.P.=$1.50
Selling Price of book, S.P.=$5
PROFIT=S.P. -C.P.
So, Profit=$5-$1.50=$3.50
So, Profit=$3.50 on each book
Or, we are given P(x)= 5x-1.50x
Or, P(x)=3.50x
For each book, we must divide the profit P(x) by x, that is, number of books
So, Profit for each book sold is $3.50
Option C
Ответ:
Step-by-step explanation:
subtract 5m from both sides
-4=-1m+18
subtract 18 from both sides
-22=-1m
simplify
m=22