2. Nicky works 4 hours for a total of $800. She is trying to
save $1,600 for a laptop.
How many hours must he
work to take home $1,600, if
he saves all of his earnings?

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.