To rent a canoe, you pay $10 up front and $8 per hour. If you have a coupon, you save $1.50 per hour. Expressions A and B show the cost of a canoe rental for h hours when you have a coupon. Expression A: (10+8h)-1.50h

Expression B: 10+h(8-1.50)

a. Use each expression to calculate the cost of a 3.5-hour rental when using a coupon.

b. How does each expression show a different way to find the cost?