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November 22, 2014

November 22, 2014

Posted by **Bob** on Thursday, May 2, 2013 at 12:28am.

- algebra1 -
**Steve**, Thursday, May 2, 2013 at 2:27pmJust plug in the numbers and solve for t:

7t^2 - 14t + 10 > 1000

7t^2 - 14t - 990 > 0

The roots of 7t^2 - 14t - 900 = 0 are

t = (7±√6979)/7 = -10.934,12.934

So, t>12.934 will produce > 1000 profit

That would be in 2019

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