This morning, elena wrote a check in the amount of $42.50. this brought her balance down to –$14.25. suppose n represents elena's balance before she wrote the check.
which equation can be used to represent this situation?

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.