Kevin and some college friends are hiking on a trail that is 70 feet above sea level. they hike into a canyon that is 14 feet below sea level. how many feet have kevin and his friends descended?

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.