Answer
$f(g(x))=2-3 x^2$
Work Step by Step
Given $f(x)=3 x-1$ and $g(x)=1-x^2$, we have
$f(g(x))=f\left(1-x^2\right)=3\left(1-x^2\right)-1=2-3 x^2$
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