Mathematics, 21.09.2019 01:30, swaggg2084

Astore has a sale on books. the price is $17.55 for one book, $16.70 each for 2 books, $15.85 each for 3 books, and $15 each for 4 books. if this pattern continues, how much per book will it cost to buy 7 books

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Astore has a sale on books. the price is $17.55 for one book, $16.70 each for 2 books, $15.85 each f...