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    3. Word Problem for Algebra- Race Time. The equation R=0.028t+20.8 can be used to predict the world record in the 200mdash, 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?
    Word Problem for Algebra- Race Time. The equation R=0.028t+20.8 can be used to predict the world record in the 200mdash, 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?

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    0  Views: 1246 Answers: 1 Posted: 12 years ago
    Tags: word problem pre-algebra
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      1 Answer

      The year in which the record will be 18 seconds is:


      18 = 0.028*t+20.8


      -2.8 = 0.028*t


      t = -100


      does it mean that the year is 1820??

      12 years ago. Rating: 0
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