Multiple Discounts An appliance dealer advertises a 10% discount on all his washing machines. In addition, the manufacturer offers a $100 rebate on the purchase of a washing machine. Let x represent the sticker price of the washing machine. (a) Suppose only the 10% discount applies. Find a function f that models the purchase price of the washer as a func- tion of the sticker price x. (b) Suppose only the $100 rebate applies. Find a function g that models the purchase price of the washer as a func- tion of the sticker price x. (c) Find fo g and go f. What do these functions represent? Which is the better deal?

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