3. Marcus is training for a race. Each training session lasts 90 minutes and consists of both cycling and running. The distance that he cycles in feet is given by the function C(t) = 1320 t, where t is the Number of minutes he cycles. The distance that he runs, in feet is given by:R(t) = 660(90 - t) a) What function describes the total distance, in feet that Marcus travels while training?

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