SAT math practice question: Functions with word translation

 
Try the following SAT math practice question (No Calculator) that tests your understanding of translating word problems and to create relationships using functions.

Question(No Calculator):

The toll for a vehicle to cross a certain bridge is a total of $\$2$ for the first two passengers plus $\$2$ for each additional passenger. Which of the following functions gives the toll $T(n)$, in dollars, for a vehicle with $n$ passengers?

1. $\quad T(n)=2n-2$
2. $\quad T(n)=2n-1$
3. $\quad T(n)=2n$
4. $\quad T(n)=2n+2$