Answer
$-8\gt d $
Work Step by Step
$56\lt-7d\longrightarrow$ divide both sides by -7; reverse the inequality sign
$56\div-7\gt-7d\div-7\longrightarrow$ divide
$-8\gt d$
Check the inequality.
$56\overset?\lt-7(-10)$
$56\lt70\checkmark$
Since -8 is not included in the solution, the endpoint of the graph is an open circle.
