Min mows lawns to earn money. The points in this
graph represent the total amount of money Min earns
based on the number of hours he mows
lawns.
Min wants to purchase a skateboard that costs
$54.

How many hours does Min need to mow lawns to earn
enough money to buy the skateboard?

A. 6 hours

B. 7 hours

C. 8 hours

D. 9 hours