(a) Estimate the area under the graph of the function f (x) = = from x = 0 to x = 3 using a Riemann sum with n = 10 subintervals and right I+7 endpoints. Round your answer to four decimal places. area = Number (b) Estimate the area under the graph of the function f (I) =- from = = 0 to r = 3 using a Riemann sum with n = 10 subintervals and left I+7 endpoints. Round your answer to four decimal places. area = Number