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2 February, 02:07

Store has a sale. 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 will it cost to buy 7 books

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  1. 2 February, 02:09
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    If my math is correct 15-.85=14.15 then 14.15-.85=13.30 then from there 13.30-.85=12.45
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