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. what does the value 1.8 represent? a. the monthly percent increase in the total number of members at the club b. the initial number of club members, in hundreds c. the number of new members that join the club per month d. the growth factor that reveals the rate at which the total number of members at the club increases