A store has issued two different coupons for its customers to use. One coupon gives customers $15 offtheir purchase price, and the other coupon gives customers 35% off of their purchase. The store allowscustomers to use both coupons and choose which coupon to apply first. For this context, ignore sales tax.
Let be the function that inputs a cost (in dollars) and outputs the cost after applying the " $15 off"coupon, and let be the function that inputs a cost (in dollars) and outputs the cost after applying the"35% off" coupon.
A customer purchases an item for $140 and asks the cashier to apply the " $15 off" coupon first, followed by the "35% off" coupon. What is the cost of the item after the two coupons are applied?