The volume of water, , in a tank is draining according to the function , where is measured in liters and is the time in minutes since the draining began. What is the best interpretation of -50 in this context?
The initial volume of water in the tank.
The rate at which water is draining from the tank in liters per minute.
The total time it takes to drain the tank.
The volume of water in the tank after 50 minutes.
