SOLUTION: The equation R= -0.028t + 20.8 can be used to predict the world record in the 200-m dash, where R represents the record in seconds and t represents the number of years since 1920.

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Question 467286: The equation R= -0.028t + 20.8 can be used to predict the world record in the 200-m dash, where R represents the record in seconds and t represents the number of years since 1920. In what year will the record be 18.0 sec?
Answer by solver91311(24713) About Me  (Show Source):
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Solve:



for . Then is your answer.

John

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