Lin's father is paying for a $20 meal. he has a 15%- off coupon for the meal. after the discount, a 7% sales tax is applied. he does not add a tip. what does lins father pay for the meal?
The total after the discount and tax is $.

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.