I have been trying to work on this problem all day and I cannot get it right and the textbook does not explain how to do it, please help me try to solve it.

If the temperature is constant, then the atmospheric pressure P (in pounds/square inch) varies with the altitude above sea level h (in feet) in accordance with the law given below where p0 is the atmospheric pressure at sea level and k is a constant.

P = p0e^-kh

If the atmospheric pressure is 14.7 lb/in^2 at sea level and 13 lb/in^2 at 4000 ft, find the atmospheric pressure at an altitude of 14,000 ft. (Round your answer to two decimal places.)

?lb/in^2