Please help with this calculus, Thank you in advance

Question

Use the table below to evaluate the derivative with respect to x of g of f of 3 times x at x = 1.

x 1 2 3 4

f(x) 6 1 2 2

f ′(x) 6 1 10 2

g(x) 1 4 4 3

g ′(x)4 5 7 –4

Answer 1

Let k(x) = 3x, k '(x) = 3

h(x) = g(f(k(x)))

h '(x) = g'(f(k(x))•f '(k(x))•k'(x)

h'(1) = g'(f(3))•f '(3)•k'(1)

= g'(2)•10•3

= 5•10•3 = 150