Answer:
5 hours
Step-by-step explanation:
Let x represent the amount of hours that ralph can do.
Let y represent the money he earned.
Let m represent how much he earns per hour.
Let b represent the initial fee
y=mx+b
y=33x + 24
189=33x+24
Solve for x:
189=33x+24
165 = 33x
x=5
