please solve for b. thank you.

If f(x) = x + 8 and g(x) =x -7, find the following. a. f(g(0)) b. g(f(0)) c. f(g(x)) d. g(f(x)) e. f(f( - 7)) f. g(g(2)) g. f(f(xx)) h. g(g(x)) a. f(g(0)) = 1 (Simplify your answer.) b. g(f(0)) = (Simplify your answer.)