Find the open intervals on which the function f (x) = -5x2+4x+9 is increasing or decreasing. Note: Use the letter U for union. To enter , type the word infinity. If the function is never increasing or decreasing, enter NA in the associated response area. increasing: (-infinity, 2/5) decreasing: (2/5, infinity) Find the local maximum and minimum values of the function f (x) = -5x2 + 4x + 9. Enter your answers in increasing order. If there is just one local maximum or minimum value, then in the second row below enter NA as the answer for "x =" and select NA in the "there is" drop-down menu. If there are no local maximum or minimum values, then in both rows below enter NA as the answer for " x =" and NA in the "there is" drop-down menu. At x = ab sin (a) 215 8 a At x = 215 ab 8 and NA in the "there is" drop-down menu. sin (a) a " there is a local maximum At x = 49 5 sin (a) a 7 there is NA a E 25 sin (a) 8 there is At x= o search 49 25 E a local maxim... sin (a) , there is a local maxim... ? Incorrect Your Answer: Submit Assignment Quit & Save Back Question Menu. PC ALIEN