The atmospheric pressure at sea level is 14.7 lb/in2. this pressure is reduced by half for each 3.6 miles above sea level. which graph correctly identifies the amount of atmospheric pressure based on height, in miles, above sea level?

Find attached a graph that I constructed.

To do that graph I used Excel.

First I did a table with this set of points:

height      presuure
miles        psi
0              14,7 < initial data

3.6           7.35 <--- increase hegiht 3.6 miles => half pressure

7.2            3.675 < second increase of 3.6 miles in height

10. 8         1.8375 < third increase of 3.6 miles in height

14.4           0.91875

18              0.459375