Question

Matthew can use the equation C=2H+8 to find the total cost in dollars, C, for renting a boat for H hours. If Matthew does not want to spend more than $20, what is the maximum number of hours he can use the boat?

Answer 1

6 hours

Explanation:

C = 2H + 8

substitute C = 20 into the equation and solve for H

20 = 2H + 8 ( subtract 8 from both sides )

12 = 2H ( divide both sides by 2 )

6 = H

that is he can use the boat for a maximum of 6 hours