As a promotion, a clothing store draws the name of one of its customers each week. The prize is a coupon for the store. If the winner is not present at the drawing, he or she cannot claim the prize, and the amount of the coupon increases for the following week's drawing. The function f (x) = 20 (1.2) ^x gives the amount of the coupon in dollars after x weeks of the prize going unclaimed. {{ x is the exponent on (1.2). }}
(A) What is the percent increase each week?
(B) What is the original amount of the coupon? (the initial value)
(C) What is the amount of the coupon after 2 weeks of the prize going unclaimed?
(D) After how many weeks of the prize going unclaimed will the amount of the coupon be greater than $100?
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