Variables are time of day and number of pieces of french toast on the serving tray. The tray starts with pieces of french toast. As the french toast pieces are taken over time the number of french toast lessens over time. After the tray is near empty it is refilled about the same ammount as it started with. Then a couple more are taken then it stays the same until the end.
Work Step by Step
As the graph shows, there is an ammount of french toast. Then the ammount dips down as the time goes by. Then a sudden dip back up to almost the same ammount as the initial. Then it decreases by a little and stays at that point until the end.