f (x) = x- -4 x2 +4 For the following questions, enter your answers in interval notation. Write "-infinity" for -co and "infinity" for co. (a) Where is f increasing? (b) Where is f decreasing? (c) How many local maxima does f have? (d) How many local minima does f have? (e) How many inflection points does f have? (f) How many vertical asymptotes does f have? (g) How many horizontal asymptotes does f have