Consider the function f(x) = 9x + 3. (a) Simplify the following difference quotient as much as possible f(x + h) - f(x) = h E (b) Use your result from (a) and the limit definition of the derivative to calculate , _. f(x+h)-f(x)_ \"we r - I (c) Use your answer from part (b) to evaluate the following f' (-5) = Z (d) Use your answer from part (c) to find the equation of the tangent line to the curve at the point (5, f(5)). )2: 2