SOLUTION: what does f(x)=15 equal and how did you get there

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Question 672014: what does f(x)=15 equal and how did you get there
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
what does f(x)=15 equal and how did you get there
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f(x) = 15 has no variable.
get where?