Can someone help me answer B, I will rate you right away

5. A stone is thrown from the top of a bridge into a lake below such that its height, h, in metres, can be modelled by the function h(t) = 60 - 8t - 4.91, where t is measured in seconds. a) Determine the average rate of change of the height of the stone in the first 3 s after it was dropped. Round your answer to one decimal place. (3 points) hit1 = 60 - 8t - 4.9+2 h(o) = 60 , h(3) = - 8.1 The average rate is ( 60 - (- 8.1) ) : 3 = 22.7 m/S b) Estimate the instantaneous rate of change of the height of the stone at t = 3 s by narrowing down preceding or following interval close to 3 s. (4 points) Interval Ay Ax