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by tonebeeze » Tue Mar 15, 2011 6:20 pm
Please see the attachment. I am competent at using the plug in method. Can someone walk me thru the algebra. Thanks.
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by Night reader » Tue Mar 15, 2011 6:26 pm
2^(n-1) + 2^n = 2^n *(1/2 +1) = 2^n *(3/2)
OR 3*2^(n-1)

choice E
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