AQR Composition Functions
1. Suppose you go to the store to shop for clothes. You have a coupon for $25 off
and the store is having a 35% off sale for the day.
a) Define x to be the cost before any discounts. Let c(x) = cost after the coupon.
Let p(x) = cost after the percent discount. Give functions for c(x) and for p(x).
