Find the open intervals on which the function f(x) = -7x + 6x + 1 is increasing or decreasing Note: Use the letter U for union. To enter o, 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) = -7x+6x+1. 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 "=" 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= At x= there is a local maximum there is a local maximum M