Kayden went to the store to buy some walnuts. The price per pound of the walnuts is $7.50 per pound and he has a coupon for $1.50 off the final amount. With the
coupon, how much would Kayden have to pay to buy 5 pounds of walnuts? Also, write
an expression for the cost to buy p pounds of walnuts, assuming at least one pound is
purchased