4. Let F(t) = f(t) + g(t) where f(t) and g(t) are given by the graphs below: y = (D) (.6) (4.6) (-3.4) (-5.3) (-5, 2) (2.2) -(5. -2) Sullivan/Miranda: Calculus, 2E. Early Transcendental @ 2019 W. H. Freeman and Company (a) Find F(0) (b) Find F' (6)