For the pair of functions, f(x) = x - 7 and g(x) = vx +6, x2 -6, find the following. a) (fog) (x) b) (fog)(3) c) (g o f ) (x) d) (g o f) (3) a) (f . g)(x) = (Simplify your answer. Type an exact answer, using radicals as needed.)