the function f (x), g(x), and h(x) are shown below. select the option that represents the ordering of the functions according to their average rate of change on the interval 2 less than or equal to x less than or equal to 4 goes from least to greatest. x= 2, 4, 6, 8, 10, 12 g(x)= 15, 9, 11, 21, 39, 65 h(x)=-x^2 +4x+26