Amelia's Girl Scout troop's savings increase by \(a\) dollars for every \(g\) boxes of cookies she sells, as shown in the equation. Brittany's troop's savings increase \(b\) dollars for every \(g\) boxes she sells, as shown in the graph. Which girl's troop earns more for each additional box of cookies sold? $a = 2g + 3$

A lined graphed on a coordinate plane. The horizontal axis is labeled g, the vertical axis is labeled b. The line starts at the 0 comma 1, and contains the point 2 comma 3.