SOLUTION: The formula R= - 0.0065t + 4.3222 can be used to predict the world record, in minutes, for the 1-mi run t years after 1900. Determine in terms of an inequality) those years for whi
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: The formula R= - 0.0065t + 4.3222 can be used to predict the world record, in minutes, for the 1-mi run t years after 1900. Determine in terms of an inequality) those years for which the world record will be less than 3.7 minutes.
I have tried working this problem numerous ways. I just do not know what I am missing. Please help.
This question is from textbook
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The formula R= - 0.0065t + 4.3222 can be used to predict the world record, in minutes, for the 1-mi run t years after 1900. Determine in terms of an inequality) those years for which the world record will be less than 3.7 minutes.
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-0.0065t + 4.3222 < 3.7
-0.0065t < - 0.6222
t > 95.72
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Year: 1900+95.72 puts you in the year 1996
Ans: 1996 and beyond
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Cheers,
Stan H.
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