Answer
$ a\lt 40.8$.
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow \frac{a}{4}\lt 10.2$
Multiply each side by $4$.
$\Rightarrow 4\times (\frac{a}{4})\lt 4\times 10.2$
Simplify.
$\Rightarrow a\lt 40.8$
Hence, the solution is $ a\lt 40.8$.
Use an open circle because $40.8$ is not a solution.
Shade the number line on the left side.
