(1 point) Consider the function f(a) = x1/(x -3). This function has two critical numbers A

(1 point) Consider the tunction f(x) (x 3). This function has two critical numbers A < B Then A Hint: and B For each ot the following intervals, tell whether f(x) is increasing or decreasing. (00, A] 9 9 The critical number A is Q v and the critical number B is There are two numbers C < D where either f" (x) = 0 or f" (x) is undefined. Then C and D Finally for each ot the following intervals, tell whether f(x) is concave up or concave down. (00,C): ?