An oceanographer uses the equation to model the speed s, in knots, of an ocean wave, where p represents the period of the wave, in seconds. Which of the following represents the period of the wave in terms of the speed of the wave?
Correct answer: A
Explanation
Choice A is correct. It’s given that p represents the period of the ocean wave, so the equation can be solved for p to represent the period of the wave in terms of the speed of the wave. Multiplying both sides of the equation by the reciprocal of
will isolate p. This yields
, which simplifies to
. Therefore,
.
Choices B, C, and D are incorrect and may result from errors made when rearranging the equation to solve for p.
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