SOLUTION: 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 y

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: 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 y      Log On


   



Question 549958: 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 seconds?
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
R = 0.028t+20.8
Let R = 18.0 and solve equation for t.
Can you take it from here?