The distance of a particle from some fixed point is given by the following function. s ( 1 ) = 1 + 5t - 2 .... . a. What is the average rate of change of s(t) over the interval 4 to 5? The average rate of change over the interval 4 to 5 is b. What is the average rate of change of s(t) over the interval 4 to 6? The average rate of change over the interval 4 to 6 is c. What is the instantaneous rate of change of s(t) when t = 4? The instantaneous rate of change when t = 4 is