A tower 42 metres high, stands on top of hill. From a point some distance from the base of the hill, the angle of elevation to the top of the tower is 13.2 degrees. From
the same point the angle of elevation to the bottom of the tower is 8.3 degrees. Find the
height of the hill.

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.