Graph f(x) = 2x3 . The domain is assumed to be the set of all real numbers for which the given formula is defined. Select item then click graph 20 to add Reset + 15 Point Line 10 Parabola 5 Cubic -5 -4 -2 -1 4 (?) Help -5 10 -15 powered by desmos -20Use the graph to determine where the rate of change is negative. (Give your answer as an interval in the form (*,*). Use the symbol co for infinity, U for combining intervals, and an appropriate type of parenthesis "(",")", "[","]" depending on whether the interval is open or closed. Enter @ if the interval is empty. Express numbers in exact form. Use symbolic notation and fractions where needed.) rate of change is negative on