please help with steps, urgent

1. (3 points) Consider an athlete running a 40-m dash. The position of the athlete is given by function s(t) = ** + 4t where s is the position in meters and is the time elapsed, measured in seconds. Compute the average velocity of the runner over the given time intervals in part b. a. [2.995,3.005) s(x)) - $(x) (3.005) - s(2.995) Msec = 3.005 -2.995 16.542538 - 16.457537 0.01 0.085001 0.01 8.5001 b. [3,3.00001) 2. (1 points) Use part a - b to guess the instantaneous velocity of the athlete at t = 3 sec