The cost of cheese at three stores is a function of the weight of the cheese. The cheese is not prepackaged, so a customer can buy any amount of cheese. Store A sells the cheese for dollars per pound. Store B sells the same cheese for dollars per pound and a customerhas a coupon for$5 off the total purchase at that store. Store C is an online store, selling the same cheese at dollar per pound, but with a $10 delivery fee.