Problem 15. (6 points) Use four rectangles to find an estimate of each type for the area under the given graph of / from = = 1 to = = 9. 1. Take the sample points from the left-endpoints. Answer. Ls = 2. Is your estimate Ly an underestimate or overestimate of the true area? Choose one 3. Take the sample points from the right-endpoints. Answer. R4 = 4. Is your estimate Ry an underestimate or overestimate of the true area?|Choose one 5. Use the Trapezoid Rule with a = 4. Answer. Is - 5. Is your estimate 7% an underestimate or overestimate of the true area? | Choose one