Having issues learning how to use this table, please help

Using the given table, evaluate the expression. You may assume that f(2) and g(2) are continuous functions. 2 7 10 14 15 20 f(x -3 10 6 14 9 -5 D -19 f' (x) 16 15 -15 -17 4 7 g z 17 -2 -17 -8 6 14 A. c'(7), where c(z) = z g(z). c'(7) B. h'(20), where h(z) = 9(f(z)). h'(20) C. d'(2), where d(z) = Vg(z). d' (2) - f(z) - 9(=) D. lim - 15 3 - 3375 f(I) . 9(z) The limit exists, lim x - 15 23 - 3375 The limit does not exist