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D=−38t+220D, equals, minus, 38, t, plus, 220

Rachel is driving a race car at a constant speed on a closed course. The formula shown above describes the remaining distance, DDD, measured in meters, that Rachel has to travel after ttt seconds. What is Rachel's speed in meters per second?

 Oct 26, 2021
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the answer is 38 

 Nov 25, 2021

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