Concept explainers
Consumer Issues. You work in a department store in which employees are entitled to a 30% discount on their purchases. You also have a coupon worth $5 off any item. Let x represent the retail price of an item,
a. Write a function ix) that models discounting an item by 30%.
b. Write a function g(x) that models applying the coupon.
c. Use a composition of your two functions from (a) and (b) to model your cost for an item assuming that the clerk applies the discount first and then the coupon.
d. Use a composition of your two functions from (a) and (b) to model your cost for an item assuming that the clerk applies the coupon first and then the discount.
e. Use the composite functions from (c) and (d) to find how much more an item costs assuming that the clerk applies the coupon first.
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Precalculus: A Unit Circle Approach (3rd Edition)
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