5. The function fgiven by f(x) = x +12x-24 is (A) increasing for x < -2, decreasing for - 2 < x < 2, increasing for x > 2 (B) decreasing for x < 0, increasing for x > 0 (C) increasing for all x (D) decreasing for all x (E) decreasing for x < -2, increasing for -2 < x < 2, decreasing for x > 2 6. For what value of x does the function f(x) = (x-2)(x-3) have a relative maximum? (A) -3 7 5 7 (B) (C) (D) (E) 3 2 [ES] Laviny 3 52