You are opening a new checking account. Gringotts Bank has more branches nearby than Tellson’s Bank but charges more fees for cashier's checks. You go into branches every week to deposit cash but never use cashier's checks. Which bank would be the better choice for you?

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.