6. [-/4 Points] DETAILS TANAPCALC10 6.3.009. Let f(x) = x, and compute the Riemann sum of f over the interval [8, 10], choosing the representative points to be the right 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 (n = 2) (b) five subintervals of equal length (n = 5) (c) ten subintervals of equal length (n = 10) (d) Can you guess at the area of the region under the graph of f on the interval [8, 10]? square units Need Help? Read It 7. [-/4 Points] DETAILS TANAPCALC10 6.3.010. Let f(x) = x, and compute the Riemann sum of f over the interval [4, 5], choosing the representative points to be the midpoints of the subintervals and using the following number of subintervals (n). (Round your answers to two decimal places.) (a) two subintervals of equal length (n = 2). (b) five subintervals of equal length (n = 5) (c) ten subintervals of equal length (n = 10) (d) Can you guess at the area of the region under the graph of f on the interval [4, 5]? square units Need Help? Read It Watch It 8. [-/1 Points] DETAILS TANAPCALC10 6.3.013.MI. Find an approximation of the area of the region R under the graph of the function f on the interval [0,2]. Use n = 5 subintervals. Choose the representative points to be the midpoints of the subintervals. f(x) = x + 4 square units Need Help? Read It Master It 9. [-/1 Points] DETAILS TANAPCALC10 6.3.014. Find an approximation of the area of the region R under the graph of the function f on the interval [-1, 2]. Use n = 6 subintervals. Choose the representative points to be the left endpoints of the subintervals. f(x)=6-x square units Need Help? Read It Watch It