Juan must purchase car insurance. He needs to earn at least $50.00 a week to cover the payments.

The most he can work each week is 8 hours because of football practice. Juan can earn $10.00 per

hour mowing yards and $12.00 per hour washing cars.

(10x + 12y 50

The system (x + y = 8

represents Juan's situation.

Part A: Define the variables.