Answer
$c\gt 8$
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow c-12\gt -4$
Add $12$ to each side.
$\Rightarrow c-12+12\gt -4+12$
Simplify.
$\Rightarrow c\gt 8$
Hence, the solution is $c\gt 8$.
Use an open circle because $8$ is not a solution.
Shade the number line on the right side.