Answer
$x\geq-\frac{3}{5}$
Refer to the step-by-step part for the graph.
Work Step by Step
If we subtract $3$ from both sides, then we'd have
$5x\geq-3$
Divide both sides by $5$ to obtain:
$\frac{5x}{5}\geq-\frac{3}{5}
\\x\ge -\frac{3}{5}$
To graph this inequality, plot a $x=-\frac{3}{5}$ on a number line, then shade the region to its right.