Let f(x) = 3x - 4x + 6 and g(x) (fog)(x) = (gof)(x) = 2x - 4. Determine the rule for the composite functions fo g and g o f. Let f(x) = 1 and g(x)= = 28x + 4. Determine the rule for the composite functions fo g and go f. 4x - 7 (fog)(x) = (gof)(x) = Let f(x): f(a) = = f(a + h) = 2x - 2x - 3. Simplify each of the following expressions. f(a + h) f(a) = f(a+h)-f(a) = (Make sure to expand and combine like terms.) (Make sure to cancel out the factor of h in the denominator.)