1. Suppose a supermarket that sells 10-ounce bottles of shampoo for $1.00 apiece and 15-ounce bottles of shampoo for $1.20 apiece offers 60-cents-off coupons (and no other kind), which are good for either size of shampoo; and suppose you somehow wind up with more of these coupons than you can ever use, so that you'll never run out. In order to save money, should you buy 10-ounce bottles of the shampoo or 15-ounce bottles? Explain. (Note: You can only use one coupon per bottle of shampoo.)
21-36. Do all the Further Applications on pages 19 through 20 of the textbook.
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