You want to buy a new video game system, but don't have the money for it. You borrow $225 from your father to buy the game system. For the next two weeks, you mow four yards each week and earn $15 per
yard. You also babysit for 8 hours and earn $6.50 per hour plus a tip of $8.
a. Do you have enough money to pay your father back? If so, how much money do you have left?
b. If not, how much money do you still need?
Justify your answer.