Answer
Atlanta: $P_{atm}=97.70kPa$
Denver: $P_{atm}=83.39kPa$
Mexico City: $P_{atm}=76.45kPa$
Top of Mount Everest: $P_{atm}=31.38kPa$
Work Step by Step
Taking the formula:
$P_{atm}=101.325(1-0.02256z)^{5.256}$
Where $z$ is the altitude in $km$ and $P_{atm}$ in $kPa$
Atlanta ($z=306m$)
$P_{atm}=101.325(1-0.02256*0.306)^{5.256}=97.70kPa$
Denver ($z=1610m$)
$P_{atm}=101.325(1-0.02256*1.610)^{5.256}=83.39kPa$
Mexico City ($z=2309m$)
$P_{atm}=101.325(1-0.02256*2.309)^{5.256}=76.45kPa$
Top of Mount Everest ($z=8848m$)
$P_{atm}=101.325(1-0.02256*8.848)^{5.256}=31.38kPa$
