(10pts) Find the sum of the areas of the shaded rectangles under the given graphs. Leave your answer as a decimal rounded to 2 places. (a) (b) y y = 2 y = e -I 2 3 4 -1 1 (10pts) Given f(x) = 12 + 1 on [0, 2]. Use four rectangles and the midpoints endpoints to approx- imate the area. Sketch the region and the corresponding Riemann rectangles. Round answer to 3 decimal places