Solve these problems:

QUESTION 1 Sketch the region enclosed by the curves, draw an approximation rectangle (label its width and height), then find the area of the region. You must decide whether to integrate with respect to x or y. y=e , y=x--1, x=-1, x=l Attach FileQUESTION 2 The integral represents A(x) dr O The volume of a solid S that lies between x =a and x=b, and whose cross-section is perpendicular to the x-axis. O The volume of a solid S that lies between x =a and x=b, and whose cross-section is perpendicular to the y-axis O The volume of a solid S that lies between x =a and x=b, where a 2b, and whose cross-section is perpendicular to the x-axis O The volume of a solid S that lies between x =a and x=b, where a s b, and whose cross-section is perpendicular to the x-axis