Answer
$f(-3)=-16$
$f(0)=-10$
$f(8)=6$
Work Step by Step
The given function is
$\Rightarrow f(x)=2x-10$
Substitute $x=-3$.
$\Rightarrow f(-3)=2(-3)-10$
Simplify.
$\Rightarrow f(-3)=-6-10$
$\Rightarrow f(-3)=-16$
Substitute $x=0$.
$\Rightarrow f(0)=2(0)-10$
Simplify.
$\Rightarrow f(0)=0-10$
$\Rightarrow f(0)=-10$
Substitute $x=8$.
$\Rightarrow f(8)=2(8)-10$
Simplify.
$\Rightarrow f(8)=16-10$
$\Rightarrow f(8)=6$
