How did you find the number of possible rides when the student plays no games? How did you find the number of possible games when the student gets on no rides? Where on the graph do we see those two situations (all games and no rides, or all rides and no games)? The three equations are all given in the same form: `Ax+By=C`. What information can you get from an equation in this form? What do the `A`, `B`, and `C` represent in each equation?