Answer
$c\gt3$
Work Step by Step
$4+c\gt7\longrightarrow$ subtract 4 from each side
$4+c-4\gt7-4\longrightarrow$ subtract
$c\gt3$
Check the inequality.
$4+4\overset?\gt7$
$8\gt7\checkmark$
The endpoint of the graph is an open circle at 3 since the inequality does not include 3.
