The percentage of high school students who drink and drive w

The percentage of high school students who drink and drive was 17.5% at the beginning of 2001 and declined linearly to 10.3% at the beginning of 2011.†

(a) Find a linear function f(t) giving the percentage of high school students who drink and drive in year t, where

t = 0 corresponds to the beginning of 2001
f(t)= ?

(b) If the trend continues, what will the percentage of high school students who drink and drive be at the beginning of 2014?
%?

Solution