How do I find the answer to this? Thanks in advance!
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from the graph, note $f(0)=f(3)=3$ $g(x) = 0$ at $x=-1$ and $x=4$ $g(x) = 3$ at $x=1$ and $x=2$ $x \in \{-1,1,2,4 \}$, where $f[g(x)]=3$
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