Joe earns $9 per hour. He worked x hours on both Wednesday and Friday, and 8 hours on both Tuesday a

Joe earns $9 per hour. He worked x hours on both Wednesday and Friday, and 8 hours on both Tuesday and Saturday. Write an expression to represent how much joe earned.

Earnings = Hourly Rate * hours worked, so we have:

• Wednesday: 9x
• Friday: 9x
• Tuesday: 9(8) = 72
• Saturday: 9(8) = 72

Joe's total earnings come from adding up all 4 days:
9x + 9x + 72 + 72

Combine like terms:
(9 + 9)x + (72 + 72)
18x + 144