. Let R be the region in the first quadrant bounded by the x-axis, the y-axis and the curve y = 1 + x and the line y = 3 x. (a) Sketch the region. (b) Set up an expression for the area of this region by setting up an integral with respect to x and y. (c) Find the area of this region by evaluating both of definite integrals you found above and compare whether they are equal or not.