Consider a swimming pool that initially contains 200 gallons of water. Water is added to the pool using a 40 gallon bucket, one full bucket every minute.
(a) Write an equation for the difference W(n+1)âW(n), which models this situation, where W(n) is the amount of water gallons as function of the number of minutes.
(b) Write the initial condition for the differentce equation above.W(0)= _______.