Question 611476
1. To solve this, you could just combine the x's and the m's. There are 3 x's, so that'd be {{{x*x*x=x^3}}}. Do the same with the m's. {{{m*m*m=m^3}}}. So, your final answer would be {{{6x^3m^3}}}.

<p>2. Let's make this into a proportion. 54:9 can also be written as 54/9. We could reduce that fraction to 6:1. So, she earns 6 dollars every hour. Now, we'd just plug in the amount of hours to know.
I'll do the first one. {{{(6/1)*(6/1)=36/1}}}. So, she made 36 dollars in 6 hours. Just do that for the rest of those problems. :)

<p>3. You can plug this into Algebra.Com's solver. ( http://www.algebra.com/services/rendering/simplifier.mpl ) 
Here it is simplified: {{{simplify_cartoon( -5*x-15=30 )}}}
It simplifies to {{{-5x=45}}} Divide both sides by -5 to get {{{x=-9}}}.

<p> :)