Let R be the region in the first quadrant bounded by the graph of y=1x, the horizontal line y=1, and the vertical line x=e. (a) Find the area of region R.
(b) Find the volume of the solid generated when region R is revolved about the line y=1.

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?