Mariah has a spinner that has 10 equal sections, each containing a different number from 1 to 10. Mariah determines about how
many times the spinner will land on a number that is greater than 7 in 250 spins, and her work is shown below.

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.