The altitude of an aircraft is in part affected by the outside air pressure and can be determined by the equation h= -100/9 log P/B , where h is the altitude in miles, P is the air pressure outside the aircraft, and B is the air pressure at
9 B
sea level. Normally, B = 14.7 pounds per square inch. If a jet's altitude is 4.8 miles above sea level, what is the air pressure
outside of the jet?