Find the average rate of change of the function over the given intervals. f(x) = 5x3 + 5; a) [4,6], b) [- 5,5] a) The average rate of change of the function f(x) = 5x3 + 5 over the interval [4,6] is D. (Simplify your answer.) b) The average rate of change of the function f(x) = 5m:3 + 5 over the interval [- 5,5] is D. (Simplify your answer.) Find the area between the curves. x= -5,x=2,y=2x2+11,y=0 The area between the curves is D. (Round to the nearest whole number as needed.)