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5 June, 08:47

Derek has $20 to spend on used

books. Hardcover books cost

$5 each and paperbacks cost $2

each. What equation in standard

form determines the number x ot

hardcover books and the number y

of paperback books he can buy?

+4
Answers (2)
  1. 5 June, 08:49
    0
    5x+2y = 20

    For every hardcover book (x) you will be charged 5$.

    For every paperback book (y) you will be charged 2$.

    The amount of both types of books you buy has to be under or equal to 20$
  2. 5 June, 08:59
    0
    The equation is 5x + 2y = 20

    Step-by-step explanation:

    Total money Derek having = 20 $

    Cost of hardcover book = 5 $

    Cost of paperbacks = 2 $

    We need to find equation in standard form determines the number x of hardcover books and the number y of paperback books he can buy.

    Total cost of x hard cover books = 5x

    Total cost of y paperback books = 2y

    He has only 20 $

    So we have

    5x + 2y = 20

    The equation is 5x + 2y = 20
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