Solve the Problem $\mathrm { P } = 14.7 \mathrm { e } ^ { - 0.21 \mathrm { x } }$

question 14

Multiple Choice

Solve the problem.
-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 for an altitude of $2.3$ miles. Round your answer to the nearest tenth.

• A) \(9.1 \mathrm { lb } /\) in. \(^ { 2 }\)
• B) \(11.0 \mathrm { lb } / \mathrm { in } ^ { 2 }\)
• C) \(8.4 \mathrm { lb } / \mathrm { in } ^ { 2 }\)
• D) \(7.8 \mathrm { lb } /\) in. \(^ { 2 }\)

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