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October 22, 2014

October 22, 2014

Posted by **Amber** on Sunday, May 3, 2009 at 12:30am.

log2 (x+5)=4+log2 (x-1)

- Pre Cal -
**drwls**, Sunday, May 3, 2009 at 12:42amlog2[(x+5)/(x-1)] = 4

2^4 = 16 = (x+5)/(x-1)

16x - 16 = x + 5

15x = 21

x = 7/5

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