3) A water tower modeled by rotating the function f (x) = ya 4+ about the x-axis. Set up the integrals necessary to compute its volume (you don't have to evaluate the integral). 3- 2 if 0 < x < 1 if 1 < x < 5 4- (x-7) + 1 if 5 x 9 1- 2-x 1 2 8 X