Saturday

March 28, 2015

March 28, 2015

Posted by **Hannah** on Saturday, January 13, 2007 at 12:49am.

I assume you mean f(x) = log (5x), not log 5 * x. If this is the case, then

f(125) = log 600

and

f(1/25) = log (1/5)

If the base of the logs is 10, then

log 600 = 2.778..

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