Estimate the area under the graph of the function f(x)=1+4 from z = -1 to z = 4 using a Riemann sum with 12 = 10 subintervals and midpoints. Round your answer to four decimal places. area= Number (a) Estimate the area under the graph of the function f(x) = 1 +17 endpoints. Round your answer to four decimal places. area Number (b) Estimate the area under the graph of the function f(z) endpoints. Round your answer to four decimal places. area Number from 0 to 1 using a Riemann sum with n = 10 subintervals and right 1 = +7 from x = 0 to 2 = 1 using a Riemann sum with n = 10 subintervals and left