Consider the function f(x) = 5x - 3x - 2 and complete parts (a) through (c). (a) Find f(a + h); f(a + h) - f(a) (b) Find h (c) Find the instantaneous rate of change of f when a = 3. (a) f(a + h) = (Simplify your answer. Do not factor.) f(a + h) - f(a) (b) h Simplify your answer. Do not factor.) (c) The instantaneous rate of change of f when a = 3 is (Simplify your answer.)