Part 1 of 2 O Points: 0 of 7 Save K Find the approximate area under the curve of y = 2x- by dividing the interval between x = 2 and x = 4 into (a) n = 5 subintervals (4x = 0.4) and (b) n = 10 subintervals (Ax = 0.2) subintervals, and then adding up the areas of the inscribed rectangles. The height of each rectangle may be found by evaluating the function for the proper x-value. (a) The area is approximately |. (Type an integer or a decimal.)