Question 8 (9 points) Consider f (x) = - 7 on the interval [-2, 6] (a) (3 pts) Find R2, the right-endpoint approximation (with n = 2 boxes) of the area under the curve over the given interval. Simplify your answer as much as possible. Write answer here: (b) (3 pts) Find L4, the left-endpoint approximation (with n = 4 boxes) of the area under the curve over the given interval. Simplify your answer as much as possible. Write answer here: (c) (3 pts) Find the exact area under the curve over the interval [0, 6]. Write answer here