A swimming pool is being drained at a constant rate of 800 gallons per hour. After 5 hours of draining, 11,000 gallons of water remain in the pool.

Step-by-step explanation:

In 5th hour remainder is 11,000 gal

Therefore at 4th hour 11,800 gal

At 3rd hour 12,600 gal

At 2nd hour 13,400 gal

at 1st hour 14,200 gal

Part B

At the beginning there is 15,000 gal

Before the draining began, the pool contained 14,200 gallons of water.

The water is being drained at a rate of 800 gallons per hour.

The function f(t) = 14,200 - (800t - 800)