Answer
$g(t)= 12 t+9$, $f(t) = t^4$
(other answers are possible.)
Work Step by Step
We can let:
$g(t)= 12 t+9$ and $f(t) = t^4$
We then get the composite function:
$$f(g(t))=(12 t+9)^{4}$$
This is the desired result.
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