The inequality notation is a mathematical expression that represents a certain variable between two or more values. In this case we have an interval that gors from 0 to infinity, since the interval is expressed with "[" we know that 0 is also a part of the interval and should be considered. The inequality is shown below:
[tex]x\ge0[/tex]Since the interval goes from anything greater than 0 and it also includes it, then the variable is greater or equal to 0.