Solve
-The Formula $\mathrm { P } = 14.7 \mathrm { e } ^ { 0.21 \mathrm { x } }$

Solve.
-The formula $\mathrm { P } = 14.7 \mathrm { e } ^ { 0.21 \mathrm { x } }$ gives the average atmospheric pressure $\mathrm { P }$ , in pounds per square inch, at an altitude $x$ , in miles above sea level. Find the average atmospheric pressure of a mountain town that is $0.8$ miles above sea level.

A) $14.5 \mathrm { psi }$
B) $17.4 \mathrm { psi }$
C) $- 13.9 \mathrm { psi }$
D) $40.4 \mathrm { psi }$