a Use a graphing utility to graph f x 0 4x 0 6x 3x 4 on the interval 6 4 and approximate any local maxima and local minima b Determine where f is increasing and where it is decreasing a Using a graphing utility graph the function for 6 x 4 and 25 sys 10 Choose the correct graph below Q The local maximum is y and it occurs at x Round to two decimal places B 12 Q G OC a Q