The length of one rectangle is 4 and the width is 2x-6. the length of another rectangle is 1/2 and the width is 6x+2. how much larger is the area of the first rectangle than the area of the second rectangle.

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.