2. Let fand g be the functions graphed below. For each problem below, show all your work and simplify your answer. If you decide any of the answers below are "does not exist," be sure to explain why. -5 -4 -B 5 ~ X -2 - a. Let C(x) = f(g(x)). Calculate C'(0). 4x b. Let D(x)= (x)+1\Calculate D' (4)