Your pool contains 21,000 gallons of water. You notice a tear in the lining and that three fourths (3/4) of the water leaks out each day.
The equation that models this situation is y equals 21000 left parenthesis 0.25 right parenthesis to the power of x
How many gallons of water will be left after 3 days? Enter a number answer only. Round to the nearest hundredth.