Answer
The function is even.
Work Step by Step
The given function is
$\Rightarrow r(x)=-6x^2+5$
Substitute $-x$ for $x$.
$\Rightarrow r(x)=-6(-x)^2+5$
Simplify.
$\Rightarrow r(x)=-6x^2+5$
Because $r(-x)=r(x)$, the function is even.
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