3. (5 points) Solve the equation. Be sure to reject any value of x that is not in the domain of the original expression. Give the exact answer. logx 27 = -3 4. (6 points) For the function below, find f"(x) . Then find f" (1) and f"(-3). f(x) - -15-P 5. (5 points) Factor the following polynomial. If it cannot be factored, state that it is prime. Factor out the greatest common factor as necessary. 16y - 81x4 6. (5 points) Sketch the derivative of the function shown in the figure below