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 #236
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Sat 7/2/15

1) Nested expansion Proof -  Well Bertie, I accepted your challenge 

2)  Algebra word problem.  These are great practice for middle high school students.  Thanks CPhill

3)  Another word problem with a quadratice function. Thanks Chris

4) Profit and loss with calculus.  Thanks Geno.

5) Chuirgeon Tud visited. Tis nice to know the fire water hath not killed him yet.

                    ♫♪  ♪ ♫                                ♬ ♬ MELODY ♬ ♬                                 ♫♪  ♪ ♫

Feb 6, 2015
 #4
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+5
Feb 6, 2015
 #1
avatar+118723 
+5
Feb 6, 2015

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