Answer
$w(-3)=14$
$w(0)=-1$
$w(8)=-41$
Work Step by Step
The given function is
$\Rightarrow w(x)=-5x-1$
Substitute $x=-3$.
$\Rightarrow w(-3)=-5(-3)-1$
Simplify.
$\Rightarrow w(-3)=15-1$
$\Rightarrow w(-3)=14$
Substitute $x=0$.
$\Rightarrow w(0)=-5(0)-1$
Simplify.
$\Rightarrow w(0)=0-1$
$\Rightarrow w(0)=-1$
Substitute $x=8$.
$\Rightarrow w(8)=-5(8)-1$
Simplify.
$\Rightarrow w(8)=-40-1$
$\Rightarrow w(8)=-41$