Question

which symbol would mean the graph has a filled circle?

Explanation:

When graphing inequalities on a number line, a filled - in circle is used to indicate that the number is included in the solution set. The symbol $\leq$ (less than or equal to) and $\geq$ (greater than or equal to) mean that the boundary value is part of the solution. Among the given options, the symbol $\leq$ (assuming the fourth option is $\geq$ or the third is $\leq$) would correspond to a filled - in circle. The symbol $<$ (first option) uses an open circle (the number is not included), and the second option (a single dot) is not a standard inequality symbol for this context.

Answer:

Assuming the third option is $\leq$ (or if the fourth is $\geq$), the symbol that means the graph has a filled circle is the one representing “less than or equal to” ($\leq$) or “greater than or equal to” ($\geq$). If we assume the third option is $\leq$: Third option ($\leq$).