In 2000, a car was valued at $9,500. In 2008, the same car was valued at $6,300. Write a linear model for the value of the car for the period 2000 through 2008 where t=0 represents the year 2000.
a) v=-3, 2007 + 8
b) v=-400t +9,500
c) v = 400+ 3,200
d) v= 1,975t + 6,300

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.