. Question 6 1pt 9 1 5 0 Details Write the sum using sigma notation: 1+ 2+ 3+4+ . . . +130 => B, where n=1 A = B = Question Help: Video Message instructor Submit Question . Question 7 1 pt 9 1 5 0 Details Approximate the area under the curve y = a from a = 1 to x = 3 using a Right Endpoint approximation with 4 subdivisions. Question Help: Video Message instructor Submit