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QUESTION
Race time. The equation R = 0.028t + 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...
Race time. The equation R = −0.028t + 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 sec?
