Question

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?

A.
0.6 gallon per minute

B.
0.67 gallon per minute

C.
1.5 gallons per minute

D.
3 gallons per minute

Answer 1

Rate = (change in gallons)/(change in minutes) = (12 − 0)/(8 − 0) = 12/8 = 1.5 gallons per minute. Answer: C.