Lily owns a restaurant. She changes the menu. She records the number of customers using the restaurant for 15 days after the menu is changed. Her results are shown in the stem-and-leaf diagram.

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.