Answer
$r\lt 1$
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow r+4\lt 5$
Subtract $4$ from each side.
$\Rightarrow r+4-4\lt 5-4$
Simplify.
$\Rightarrow r\lt 1$
Hence, the solution is $r\lt 1$.
Use an open circle because $1$ is not a solution.
Shade the number line on the left side.
