Use the four-step process to find s'(x) and then find s'(1), s'(2), and s'(3) s(x) = 3x - 6 s' (x) = (Simplify your answer. Use integers or fractions for any numbers in the expressic s'(1) = (Type an integer or a simplified fraction.) s (2) = (Type an integer or a simplified fraction.) s'(3) = (Type an integer or a simplified fraction.)