Consider the function m(x) = 24x + 120x - 200x3+ 20. Differentiate m and use the derivative to determine each of the following. All intervals on which m is increasing. If there are more than one intervals, separate them by a comma. Use open intervals and exact values. m increases on: All intervals on which m is decreasing. If there are more than one intervals, separate them by a comma. Use open intervals and exact values. m decreases on: The value(s) of a at which m has a relative maximum. If there are more than one solutions, separate them by a comma. Use exact values. m has relative maximum(s) at x = The value(s) of a at which m has a relative minimum. If there are more than one solutions, separate them by a comma. Use exact values. m has relative minimum(s) at x =