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 Ohr 0 5hr 1hr a Estimate the bicyclist s average velocity over the following time intervals Over 0 1 the average velocity is approximately mi hr Over 1 2 5 the average velocity is approximately Over 2 5 3 5 the average velocity is approximately b Estimate the bicyclist s instantaneous velocity at the following times At t 1 2 hour the instantaneous velocity is approximately At t 2 hours the instantaneous velocity is approximately At t 3 hours the instantaneous velocity is approximately mi hr mi hr 1 5hr mi hr mi hr 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 t 2hr 2 5hr 3hr hr 3 5hr time 4hr