Aurora Muffler, Inc. operates an automobile service facility. The table below shows the cost incurred during a month when 500 mufflers were replaced. 
Required:
Fill in the missing amounts, labeled A through O, in the table above.
Definitions:
Assertiveness
Acting in one’s own best interests by expressing one’s thoughts and feelings directly and honestly.
Assertive Communication
A style of communication in which individuals express their own needs, desires, ideas, and feelings in a clear, direct, and respectful way.
Assertive People
Individuals who confidently express their opinions and needs directly and respectfully.
Aggressive People
Individuals who exhibit behaviors that are forceful, hostile, or attacking in nature, often with the aim to dominate or control others.
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