Michael owns a lawn care service. He charges each customer 30 + 12h dollars, where h represents the number of hours spent working on a lawn. What does each part of the expression represent?

Match the correct answers to each part of the expression.

30
12
12h
the fee for one hour of lawn service without the base fee
the amount of money Michael earns every week
the base fee for lawn service
the cost for h hours of lawn service without the base fee