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December 19, 2014

December 19, 2014

Posted by **Karla** on Monday, April 9, 2012 at 9:05am.

log(x+25)= 1+ log(2x-7)

- Math -
**Steve**, Monday, April 9, 2012 at 11:58amrecall that log 1 = 10

log(x+25) = log(10) + log(2x-7)

log(x+25) = log(10(2x-7))

x+25 = 10(2x-7)

x+25 = 20x - 70

19x = 95

x = 5

check:

log(30) = 1 + log(3) = log(10)+log(3) = log(30)

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