Given the function $f(x)=8 | x - 6 |$, calculate the following values:
$f(0)=$
$f(2)=$
$f(-2)=$
$f(x+1)=$
$f(x^2+2)=$
Note: In your answer, you may use ${\rm abs}(g(x))$ for $|g(x)|$.

Your overall score for this problem is