Ted Williams's record of a .406 batting average for a season means what?
He hit 406 hits that season.
He hit the ball four times out of ten.
He had 406 at bats that season.
He struck out sixty percent of the time.

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.