Final answer:
Tony's labor would be categorized as an opportunity cost and the tips he collects would be seen as a form of income. The business would not include Tony's labor as a direct cost, but they would recognize the value of his contributions.
Step-by-step explanation:
In terms of costs, Tony's labor would be categorized as an opportunity cost. Since Tony is a member of the family and is not paid a wage, his labor is considered unpaid or non-market labor. However, the tips Tony collects can be seen as a form of income that is not directly associated with the business. Therefore, the business would not include Tony's labor as a direct cost in their accounting records, but they would recognize the value of his contributions as a benefit.