The table shows how the amount of water in a bathtub changed while the faucet was on.
Water in Bathtub
Time
(minutes)
Amount of Water
(gallons)
0 0
2 3
4 6
6 9
8 12
At what average rate did the bathtub fill with water?
To find the average rate at which the bathtub filled with water, we need to find the change in the amount of water divided by the change in time.
The change in the amount of water is 12 gallons - 0 gallons = 12 gallons.
The change in time is 8 minutes - 0 minutes = 8 minutes.
Therefore, the average rate at which the bathtub filled with water is 12 gallons / 8 minutes = 1.5 gallons per minute.