Answer
$y\lt-13$
Work Step by Step
Using the properties of inequalities, the solution to the given inequality, $
-2(y+4)\gt18
,$ is
\begin{array}{l}\require{cancel}
(y+4)\lt\dfrac{18}{-2}
\\\\
y+4\lt-9
\\\\
y\lt-9-4
\\\\
y\lt-13
.\end{array}