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March 30, 2015

March 30, 2015

Posted by **willa** on Saturday, June 18, 2011 at 7:36pm.

- math The function D(x) models the cumulative numbe -
**Anonymous**, Sunday, June 19, 2011 at 1:48amD(x)=2386x^2+5147x+5398=89000

2386x^2+5147x+5398-89000=0

2386x^2+5147x-83602=0

If you don't know solve that equation in google type:

quadratic equation online

When you see list of results click on:

Free Online Quadratic Equation Solver:Solve by Quadratic Formula

When page be open in rectangle type:

2386x^2+5147x-83602=0

and click option solve it.

You will see solution step by step.

4.94 approx = 5

Approximately the year=1984+5=1989

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