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the equation R= -0.028(T) + 20.8 can be used to predict the world record in the 200-m dash, where R is the record in seconds and T is the number of years since 1920. in what year will the record be 18.
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the equation R= -0.028(T) + 20.8 can be used to predict the world record in the 200-m dash, where R is the record in seconds and T is the number of years since 1920. in what year will the record be 18.0 second?

User Adam Moller
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User Brian McCall
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