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Mathematics, 29.09.2019 03:30 iamhayls

Derek has $20 to spend on used books. hardcover books cost $5 each and paperbacks cost $2 each. complete the equation which determines the number x of hardcover books and the number y of paperback books he can buy.

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Derek has $20 to spend on used books. hardcover books cost $5 each and paperbacks cost $2 each. comp...
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