Harriet buys lunch at school every day. She always gets pizza when it is available. The cafeteria has pizza about 80% of the time. Harriet runs a simulation to model this using a random number generator. She assigns these digits to the possible outcomes for each day of the week:

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.