Answer
$6\lt c$
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Work Step by Step
$-30\gt-5c\longrightarrow$ divide both sides by -5; reverse the inequality sign
$-30\div-5\lt-5c\div-5\longrightarrow$ divide
$6\lt c$
Check the inequality.
$-30\overset?\gt-5(7)$
$-30\gt-35\checkmark$
Since 6 is not included in the solution, the endpoint of the graph is an open circle.