The Air Pressure P (H) (In Lb/ In ² ) $p ( h ) = 14.7 e ^ { - 0.0000385 h }$

Multiple Choice

The air pressure p (h) (in lb/ in ² ) at an altitude of h feet above sea level may be approximated by the formula $p ( h ) = 14.7 e ^ { - 0.0000385 h }$ At approximately what altitude h is the air pressure 9 lb/ in ² ?

A) 12,743 ft
B) 1,274 ft
C) 17,123 ft
D) 5,534 ft
E) 553 ft