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December 20, 2014

December 20, 2014

Posted by **Sam** on Friday, May 20, 2011 at 9:29am.

- algebra -
**Marth**, Friday, May 20, 2011 at 10:36amWhen the world record is less than 3.1, R is less than 3.1.

3.1 = -0.075t + 3.85

Solve for t (in years after 1930).

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