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November 5th, 2014, 04:41 PM  #1 
Newbie Joined: Oct 2014 From: Canada Posts: 7 Thanks: 0  Evaluating Expressions
Hi everyone, I really need some help evaluating the following expressions. Any help you could offer would be great Also if you could show your steps, so I can learn how to do the problems, that would also be appreciated. Thanks to everyone who helps out. 
November 5th, 2014, 06:43 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 19,188 Thanks: 1648 
(a). Use the rules that for positive $x$ and $y$ and any logarithmic base, $$\log(x) + \log(y) = \log(xy)\,\text{ and }\log(x^3) = 3\log(x).$$ (b). Multiply the numerator and denominator by 3^16. Multiplying powers of the same integer is done by adding the exponents. Is that sufficient help? 
November 6th, 2014, 04:43 AM  #3 
Senior Member Joined: Nov 2010 From: Indonesia Posts: 1,998 Thanks: 132 Math Focus: Trigonometry 
Also, for log 0.001, just do the mental math: 10 to the power of what will result in 0.001?


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