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Anonymous
It is so very simple and quick to get the answer, especially since, IF you need it, you can use the calculator that comes with your computer. However, you appear not to be aware of that and the answer is 16.
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log3(x)=4 x=3^4 x=81
4² x 4³ = 16 x 64 = 24 + 40 + 360 + 600 = 1,024
4 = 12 / 3 therefore 8-x must equal 3, so x has to equal 5.
-x=-2
Yes.