Answer:
Variables are a 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 amount as it started with. Then a couple more is taken then it stays the same until the end.
Explanation:
As the graph shows, there is an amount of french toast. Then the amount dips down as time goes by. Then a sudden dip backs up to almost the same amount as the initial. Then it decreases by a little and stays at that point until the end.
Hope it helps you :)