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) (Show Source): You can put this solution on YOUR website!
Solve:
for 
. Then 
is your answer.
John
My calculator said it, I believe it, that settles it
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