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February 28, 2015

February 28, 2015

Posted by **Amber** on Monday, January 14, 2008 at 10:59pm.

dealing w/-subst. and elimin.

- Algebra -
**Reiny**, Monday, January 14, 2008 at 11:31pmlet number of 2 pointers be x, then number of 4pointers is y

so x+y = 40

2x + 4y = 100

take it from there

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