Marina's bill for dinner totals 38.65, including tax. She leaves a 20% tip . If she pays with a 100$ bill, how much change will Marina recieve

Afitness center has 2 membership plans one has a low dollar sign up fee of 15 dollars and costs 38 dollars per month to join. a second plan has a higher sign up fee of 78 dollars but a lower monthly fee of 31 dollars for what number of days of the month is the coat the same