Alex earns a weekly base salary of $650 as a car salesman. He also earns a 9% commission on his monthly sales after the first $10,000. What was his total salary this month if he sold 7 cars whose average price was $4,500 each?

The GED Mathematical Reasoning test measures your algebraic and quantitative problem-solving skills and requires you to demonstrate an understanding of mathematical concepts, the skill to use those concepts, and the ability to apply knowledge in real-world scenarios.