22. Determine the average rate of change of the function f(x) =3 * where f(x) final amount and x is no of days investment over the interval x=3 to x=4. Explain your procedure of answer step by step & separately for communication marks. [K/U=3 [C=3] b. Show that x +1 is a factor of p(x) = x3+2x2+3x+2 Factor fully and show the final answer in