3. Sketch 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=5?x, y=3, and 2y+3x=8

4. A volume is described as follows: 1. the base is the region bounded by y=3?(3/64)x^2 and y=0 2. every cross section parallel to the x-axis is a triangle whose height and base are equal. Find the volume of this object.

7.

Determine the volume of the solid generated by rotating function f(a:) = V 81 m2 about the x-axis on [2,9]