SALES For Exercises 56 and 57, use the following information. A store advertises that
Chapter 7, Problem 56(choose chapter or problem)
SALES For Exercises 56 and 57, use the following information. A store advertises that all sports equipment is 30% off the retail price. In addition, the store asks customers to select and pop a balloon to receive a coupon for an additional n percent off one of their purchases.
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