Answer Happy

Question 1 5 pts A tank is filled with 1000 gallons of brine, in which 20 pounds of salt is dissolved. A brine mixture, containing 0.25 lb. of salt per gallon, is pumped into the tank at a rate of 20 gallons per minute. The mixture in the tank is well-stirred, and a pump is used to remove the brine mixture from the tank at a rate of 20 gallons per minute. What is the differential equation that is used to model the rate of change of pounds of salt in the tank over time? Fill in the blanks to complete each statement. Let A (t) represent the number of pounds of salt in the tank at time t minutes. b) A (0)