Pls convert 16 over 5 to a decimal using long division. 3.2, 3.4, 4.2, or 4.4

Which of the following tables represents exponential functions?

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

Solve the triangle. a = 21°, c = 105°, c = 5