Lin’s smart phone was fully charged when she started school at 8:00 a. m. At 9:20 a. m., it was 90% charged, and at noon, it was 72% charged. When do you think her battery will die?

Which of these tables represents a non-linear function?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

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.