.8 2. Suppose that f is a continuous function such that f(x) dx = -12. Find x2 f (x3) dx.Set up the definite integral required to find the area of the region between the graph of y = x - 13 and y = 3x - 9. dxSketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y - 4 x, y = 3, and 2y + 1x = 5