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April 17, 2014

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Posted by **Esther** on Friday, February 4, 2011 at 12:34am.

- Algebra 1 -
**drwls**, Friday, February 4, 2011 at 6:41amLet number of scientific calculators = s

Let number of graphing caclulators = g

s + g = 41

9s + 55 g = 1519

Multiply the first equation by 9

9s + 9g = 369

Now subtract #3 from #2

46g = 1150

g = 25

s = 41 - g = ?

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