2. During typhoon Ambo, PAGASA tracks the amount of accumulating rainfall. For the first three hours of typhoon, the rain fell at a constant rate of 25mm per hour. The typhoon slows down for an hour and started again at a constant rate of 20 mm per hour for the next two hours. Write a piecewise function that models the amount of rainfall as function of time.
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Answer:
R(h): 25 if h less than or equal to 3
R(h): 25 if h less than or equal to 3 (25h-20h if h is greater than or equal to 3