Please need answers

(A) Estimate the area under the graph of f(z) = 216 + 3 from c = -1 to x = 5, first using 6 approximationg rectangles and right endpoints, and then improving your estimate using 12 approximationg rectangles and right endpoints. 6 Rectangles = 12 Rectangles = (B) Repeat part (A) using left endpoints 6 Rectangles = 12 Rectangles = (C) Repeat part-(A) using midpoints 6 Rectangles = 12 Rectangles =