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You have a $40 coupon and a 10% off
promotional discount for a limousine rental. The cost
of the limousine is $100 per hour, plus a 20% gratuity.
You rent the limousine for 4 hours. Use composition
of functions to find the amount you pay in each
situation.

a. The coupon is applied before the promotional
discount.
b. The promotional discount is applied before
the coupon.