4) (20 points) Use Disk Method or Washer Method (for all parts) set up an integral to nd the volume of the solid obtained by rotating the region bounded by y = x/x 5 , x = 9, and y = 0 about a. the xaxis. (Set up the integral to nd the volume, but do not evaluate the integral) b. the line y = 7. (Set up the integral to nd the volume, but do not evaluate the integral) c. the yaxis. (Set up the integral to nd the volume, but do not evaluate the integral) (1. the line x = 10 . (Set up the integral to nd the volume, but do not evaluate the integral)