2. [0/6 Points] DETAILS PREVIOUS ANSWERS MY NOTES ASK YOUR TEAC Consider the function below. (Give your answers correct to 2 decimal places.) h (x) = 21.x - 523 (a) Identify the open interval on which the function is increasing. (If you need to enter co or -co, type INFINITY or -INFINITY. X infinity x ) (b) Identify the open. intervals. on which the function is decreasing. (If you need to enter co or -co, type INFINITY or -INFINITY. -infinity, I ...... . x ) (leftmost interval, smaller x value) X X ) (rightmost interval, larger x value) Submit Answer 3. [-/7 Points] DETAILS MY NOTES ASK YOUR TEACH Consider the function below. (Give your answers correct to 3 decimal places.) f (x) =6x4 - 22x +9 (a) Find the critical numbers of f (if any). If there are no critical numbers, enter NONE. (b) Find the open interval on which the function is decreasing. (If you need to enter co or -co, type INFINITY or -INFINITY.) Find the open interval on which the function is increasing. (If you need to enter co or -co, type INFINITY or -INFINITY.) (c) Apply the First Derivative Test to identify the relative extremum