Answer
$d\lt-12$
Work Step by Step
$-1.5d\gt18\longrightarrow$ divide each side by -1.5; reverse the inequality sign
$-1.5d\div-1.5\lt18\div-1.5\longrightarrow$ divide
$d\lt-12$
The endpoint on the graph will be an open circle since -12 is not included in the solution set.
