work for answer please help

2. In the function h(r) below, defined in terms of f(x) and g(r), determine h'(2) in each case if f (2) = 3, g(2) = 4, f'(2) = 1, and g'(2) = -5. (a) h(x) = 2f(x) + 59(x) (b) h(x) = f(x)g(x) (c) h(x) = f(x) g(I) (d) h(r) =- g(I) f(x) + 2