Suppose that people check their coats in a checkroom. If all claim checks are lost and the coats are randomly returned, what is the probability that all the people will get their own coats back?.

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?