3. This table shows a linear relationship between the amount of water in a tank and time.
time (minutes) water (gallons)
0
30
5
20
xh
xt
10
10
Which of these statements is true?
A. The water in the tank is increasing at a rate of 2 gallons per minute.
B. The water in the tank is increasing at a rate of 10 gallons per minute.
C. The water in the tank is decreasing at a rate of 2 gallons per minute.
The water in the tank is decreasing at a rate of 10 gallons per minute.