Find the inverse for each of the following functions.

$f (x) = 2 x + 12$
$f^{-1}( x ) =$

$g(x) = 3 x^3 -14$
$g^{-1}( x ) =$

$\displaystyle h(x) = \frac{2}{x + 14}$
$h^{-1}( x ) =$

$j(x) = \sqrt[3]{x + 3}$
$j^{-1}( x ) =$