Flow Rates A water tank has an inlet pipe with a flow rate of 5 gallons per minute and an...

Flow Rates A water tank has an inlet pipe with a flow rate of 5 gallons per minute and an outlet pipe with a flow rate of 3 gallons per minute. A pipe can be either closed or completely open. The graph shows the number of gallons of water in the tank after x minutes have elapsed. Use the concept of slope to interpret the piece of this graph.