1) Use Rolle's Theorem on f(x) = x2 + 6x to find all points c in the interval (-6, 0) for which f'(c) = 0. a) O Rolle's theorem does not apply b) O c = 3 c) O C = - 3 d) cz -3 22) Let f(x) = -3x2 - x + 4 on [0, 3]. Find the number c that satisfies the mean value theorem? a) O c = b) c = - 3 2 c)OC = 6 d) c =\f5) Find the intervals on which f(x) = 4x3 + 7x + 6 is decreasing. a) O All real numbers b )O x 5 7 12 c ) O . 7 7 12 12 d) . Never Decreasing