A large water tank is being drained for maintenance. The equation below models the approximate volume of water, , in gallons, that remains in the tank minutes after the draining process began.
The graph of this equation in the -plane is a line. What is the best interpretation of the -intercept in this context?
The tank initially contained 1000 gallons of water.
The tank is draining at a rate of 50 gallons per minute.
It will take 20 minutes for the tank to be completely empty.
After 10 minutes, there will be 500 gallons of water remaining.
