Find the open intervals on which the function f (x) = -5x2 + 6x + 10 is increasing or decreasing. Note: Use the letter U for union. To enter co, type the word infinity. If the function is never increasing or decreasing, enter NA in the associated response area. increasing: decreasing: Find the local maximum and minimum values of the function f (x) = -5x2 + 6ac + 10. 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 "a =" 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 = sin (a) ? , there is Click for List At a = ao sin (a) a ? , there is Click for List