Answer
$(-\infty,-4)$
See the figure below.
Work Step by Step
The given inequality includes all the real numbers less than $-4$ so use parentheses on both ends the interval notation.
Hence, the given inequality can be written as $(-\infty,-4)$.
To graph, plot a hollow dot at $x=-4$, then shade the region to the left of $-4$.
See the figure below.
