(a) Use a graphing utility to graph f(x) = - 0.2x - 0.6x-+ 5x - 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 - 65x54 and -25sys 10. Choose the correct graph, below. O A. O B. O c. The local maximum is y ~ and it occurs at x ~ (Round to two decimal places.) The local minimum is y ~ and it occurs at x ~ (Round to two decimal places.) (b) Where is the graph of f increasing? O [-4.06,2.06] O [- 20.81,2.01] O [- 6,2.01] and [2.06,4] [-6, - 4.06] and [2.06,4] Choose the answer that most completely answers the question.) Where is the graph of f decreasing? [-6,2.01] and [2.06,4] [- 20.81,2.01] O [- 4.06,2.06] O [-6, - 4.06] and [2.06,4] Choose the answer that most completely answers the question.)