Find the instantaneous rate of change for the function at the given value. f(x)=x2+5xatx= -2 The instantaneous rate of change at x = - 2 is D. Find the average rate of change of the function over the given intervals. f(x) = 8x3 + 8; a) [5,7], b) [- 2.2] a) The average rate of change of the function f(x) = 8x3 + 8 over the interval [5,7] is D. (Simplify your answer.) b) The average rate of change of the function f(x) = 8x3 + 8 over the interval [- 2,2] is D. (Simplify your answer.) The cost to transport a mobile home depends on the distance, x, in miles that the home is moved. Cost per Mile Distance in Miles Let C(x) represent the cost to move a mobile home x miles. One rm charges as follows. 8 $4.00 0