Homework Help: advanced functions

Posted by oranges on Wednesday, May 25, 2011 at 7:19pm.

I need help figuring this question out please :)

log2=log(x+5)-1

I have been studying for my test and this is a question i got stuck on.

advanced functions - Reiny, Wednesday, May 25, 2011 at 8:35pm
so log(x+5) = log2 + 1

x+5 = 10^(log2 + 1) = 20
x = 15

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