6.2, 6.3. 5.4, 6.5 Use a Riemann sum to approximate the area under the gram-of {(1) (shown I which graph below are the selected points the right end points of the 4 below) on the interval 0 5 x S 4 Being rt '-' 4 'suhintervals with the selected points approximating rectangles? as the right end points. Draw the approximating rectangles. Using the specied rectangles, approximate the area. D