Answer
It is a one-to-one function
Work Step by Step
$f(x) = 3 + x^3$
One to one if f(p) = f(q)
$f(p) = 3 + p^3$
$f(q) = 3 + q^3$
$ 3 + p^3 = 3 + q^3$
$p^3 = q^3$
$p = q$
Thus it is a one-to-one function
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