4. Determine each of the following for the function given. Fill in each blank, and then graph the function. If no answer, write \"none\". _x2+4_ , _ 16x . H _16(4-+3x2) f(x)-4_x2: f(x)W: fed-W a. Critical value(s): b. Local maximum(a) and/or minimum(a): c. Interval(s) Where f is increasing: (1. Interval(s) Where f is decreasing: e. Inection point(s): f. Interval(s) Where f is concave up: g. Interval(s) where f is concave down: h. Vertical Asymptotes: i. Horizontal Asymptote: j. Graph the function