If you have 10,000 dollars in the account, at what rate is your money growing?

Rate of change =

Suppose that you are also withdrawing money from the account at $1,000 per year. What is the net rate of change in the amount of money in the account?

Rate of change =

** (b) ** Suppose that a water tank contains 100 gallons of salt water and that a salty solution, which contains 20 grams of salt in every gallon, enters the tank at 2 gallons per minute.

How much salt enters the tank each minute?

Rate of salt entering =

Suppose that initially there are 300 grams of salt in the tank. How much salt is in each gallon at this point in time?

Concentration of salt =

Finally, suppose that evenly mixed solution is pumped out of the tank at the rate of 2 gallons per minute. At what rate is the salt leaving the tank?

Rate of salt leaving =

What is the net rate of change in the amount of salt in the tank?

Rate of change =

You can earn partial credit on this problem.