(1 point) The graph below shows the total distance s, in miles, traveled by a bicyclist after t hours. 40mi distance 35mi 30mi 25mi 20mi 15mi 10mi 5mi Omi time Ohr 05h Thi 15h 2h 25hi 3hi 35 4h (a) Estimate the bicyclist's average velocity over the following time intervals. Over [0, 1], the average velocity is approximately mihr Over [1, 2.5), the average velocity is approximately mihr Over [2.5,3.5), the avokage velocity is approximately mi/hr. mi/hr. (b) Estimate the bicyclist's instantaneous velocity at the following times. Ati = 1/2 hour, the instantaneous velocity is approximately At t = 2 hours, the instantaneous velocity is approximately At = 3 hours, the instantaneous velocity is approximately mvhr. mi/hr. (c) Estimate the bicyclist's maximum velocity and the specific time at which it occurs. The maximum velocity is approximately mi/hr, which occurs when I hr