A water tank is draining at a constant rate. The function models the volume of water, in gallons, remaining in the tank after minutes. Which statement is the best interpretation of the -intercept of the graph of in the -plane in this context?
The tank drains at a rate of 3 gallons per minute.
The tank initially contained 50 gallons of water.
The tank will be empty after 50 minutes.
The tank drains at a rate of 50 gallons per minute.
