Solve
-A Plane Flies 420 Miles with the Wind and 350

question 50

Multiple Choice

Solve.
-A plane flies 420 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is $21 \mathrm { mph }$ , what is the speed of the plane in still air?

• A) \(256 \mathrm { mph }\)
• B) \(236 \mathrm { mph }\)
• C) \(231 \mathrm { mph }\)
• D) \(221 \mathrm { mph }\)

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Definitions:

Selective Pressures

Environmental or societal factors that influence the survivability and reproductive success of organisms, thereby affecting evolutionary change.

Evolved Sex Differences

Refer to the biological and psychological differences between males and females that are believed to have developed through the process of evolution to adapt to specific environmental challenges.

Empirical

Pertaining to or based on observation or experience rather than theory or pure logic.

Investigate

the action of carrying out research or systematic inquiry to discover facts or information about a subject, often involving the collection of evidence.