Joe rides his bicycle an average of 15 mph. The distance Joe rides d (t) (in mi) is given by d (t) = 15t, where t is the time in hours that he rid (a) Evaluate d (3) and Interpret the meaning. (b) Determine the distance Joe travels in 35 min. Give the exact answer. Do not round. Parte: Part 1 of 2 (a) d (3)= Thus, Joe travels mi in hours.