What are the critical points of the functicnfOC) = 3x + i ? x5 x5 3 and 3. o The critical points are x O The critical points are x O The critical point is x = 0. 1 l O The critical points arex = and 3 . 3 On what intervals isf(x) = x 3): increasing? The graph is increasing for the intervals (D, D) and (D, D). On what interval isf(x) = x3 + 3x2 24): + 7 decreasing? The graph is decreasing on the interval (D, D)