A company operates a chain of restaurants across different locations. Each restaurant incurs fixed costs of $10,000 per month and variable costs of $5 per customer served. The average selling price per customer varies across locations and ranges from $10 to $20. Using Cost-Volume-Profit (CVP) analysis, determine the breakeven point for each restaurant in terms of both customers served and sales revenue generated. Discuss the implications of breakeven analysis results for restaurant performance evaluation and management decision-making.