a 60 gallon container contains 30 gallons of water. water pours in at 1 gallon per minute, but drains out at the rate of 3 gallons per minute. How much water is in hte container after t minutes? Is the container emptying or filling? when is the container empty or full?
After t minutes, there are ____ gallons in the container. The container is ___ and it is ____ after ____ minutes.