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Linear functions SAT question
Math · Algebra · Easy · Answer it here, explanation included.
The equation gives the speed , in miles per hour, of a certain car seconds after it began to accelerate. What is the speed, in miles per hour, of the car seconds after it began to accelerate?
ExplanationShow
Choice D is correct. In the given equation, is the speed, in miles per hour, of a certain car seconds after it began to accelerate. Therefore, the speed of the car, in miles per hour, seconds after it began to accelerate can be found by substituting for in the given equation, which yields , or . Thus, the speed of the car seconds after it began to accelerate is miles per hour.
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C is incorrect and may result from conceptual or calculation errors.
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