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a store has a sale on books the price is $17.55 for one book $16.70and each for two books $15.85 for each three books and $15 each for four books if this pattern continues how much per book will it cost to buy 7 of books

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f4shore

Your answer would be $30.85.

This is your answer because you will be buying books by the pairs. You would get the 4 book for $15 and the 3 books for $15.85 deal.

When you add those together you would get $30.85, and that would be your answer.