The selling price of the DVD is $9.99. There is no labor cost because the DVDs are bought wholesale already packaged. The cost to buy the DVDs wholesale are
$3.45. Calculate the economics of one unit of sale.

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.