The Terman Study of the Gifted followed children who scored above a certain level on an I. Q. test into adulthood. The study collected information on the same participants, including the average height of the group, approximately every five years. Which of the following could best display how the average height of participants changes over time?

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.