4· 014 points ! Previous Answers TanApCalcBr9 6.3.008. My Notes Ask Your Teach Let fx)x2, and compute the Riemann sum of fover the interval (6, 8], choosing the representative points to be the left endpoints of the subintervals and using the following number of subintervals (n). (Round your answers to two decimal places.) (a) Two subintervals of equal length (n2) 167.41 (b) Five subintervals of equal length (n = 5) 167.69 (c) Ten subintervals of equal length (n10) 167.73 (d) Can you guess at the area of the region under the graph of fon the interval t6, 817 167.73 square units