Air Pressure Problem: The pressure of the air in the Earth's atmosphere decreases exponentially with altitude above the surface of the Earth. The pressure at the Earth's surface (sea level) is about 14.7 pounds per square inch (psi) and the pressure at 2000 feet is approximately 13.5 psi.
Let y be the air pressure.
Let x be the altitude.
Find the particular equation expressing pressure in terms of altitude.