During the first three hours of a recent storm the rain fell at a constant rate of 10 mm per hour. The storm stopped for the next 2 hours and then it started raining again at a constant rate of 20 mm per hour for the next 5 hours. Match the pieces of the piecewise function that describes the total rainfall in this situation with the appropriate domain.
f(h)=10h
f(h)=30
f(h)=30+20(h-5)