I'm in middle of my exam. Please help

iMath M Gmail Suppose that f(x) = 9x3 - 2 -3. (A) Find all critical numbers of f. If there are no critical numbers, enter 'NONE'. Critical numbers = (B) Use Interval notation to Indicate where f(x) Is Increasing. Note: Use 'INF' for co, '-INF' for -co, and use 'U' for the union symbol. Increasing: (C) Use Interval notation to indicate where f(2) is decreasing. Decreasing: (D) Ust the x-coordinates of all local maxima of f. If there are no local maxima, enter 'NONE'. x values of local maxima = (E) List the x-coordinates of all local minima of f. If there are no local minima, enter 'NONE' values of local minima = (F) Use interval notation to indicate where f() is concave up. Concave up: (G) Use interval notation to indicate where f (r ) is concave down. Concave down: (H)List the x values of all inflection points of f. If there are no inflection points, enter 'NONE' z values of inflection points = (1) Use all of the preceding information to sketch a graph of f. When you're finished, enter a "1" in the box below. Graph Complete: Note: You can earn partial credit on this problem. Guidelines OK Webcam