Answer :
g(x) = f(x)/x
g'(x) = (xf'(x) - f(x))/x^2
g'(4) = (4f'(4) - f(4))/4^2 = (4(-5) - 3)/16 = (-20 - 3)/16 = -23/16
g'(x) = (xf'(x) - f(x))/x^2
g'(4) = (4f'(4) - f(4))/4^2 = (4(-5) - 3)/16 = (-20 - 3)/16 = -23/16