1. State the problem: Label the top-center number line which runs from -4 to 4 and has a red filled circle at 3. 2. Formula and notation: The relevant expressions to consider are $x=3$, $x\le 3$, $x\ge 3$, $x<3$, and $x>3$. 3. Important rules: A filled (solid) circle means the point is included in the solution set. 4. Important rules: An arrow extending to the right means the solution continues to greater values and an arrow to the left means it continues to smaller values. 5. Intermediate reasoning: This graph shows a filled circle at 3 and no arrow, so it is a single included point rather than an interval. 6. Conclusion: Therefore the top-center graph corresponds to $x=3$.