air pressure decreases exponentially with increases in elevation.the air pressure, y (in atm units) at a given elevation,x,(in meters), can be modeled using equation y=e^-kx ,where jk is the decay constant. at an elevation of 5486 m where the air pressure is 0.5 atm, what is the value of k?

Question

jhonyy9 · Answer

- in the text of your problem there is given 
y - the air pressure 
jk - the decay constant - but inside your posted formula dont exist ,,jk" - just ,,k" 
e - hope you know what mean and what is the value of it ?