Final answer:
The Maple Inn Restaurant likely violated the Occupational Safety and Health Act (OSHA) by allowing minors to use hazardous equipment and may have also violated the Pure Food and Drug Act of 1906 due to unsanitary conditions.
Step-by-step explanation:
The Federal act that the Maple Inn Restaurant violated, based on their fines for unsanitary conditions and allowing minors to work with hazardous equipment, most likely relates to the Occupational Safety and Health Act (OSHA), which mandates workplace safety, including the use of hazardous equipment by minors, and standards for sanitation. However, the fines related specifically to food sanitation may also be connected to the Pure Food and Drug Act of 1906, which enforces federal standards of inspection and sanitation on food service providers. While the Pure Food and Drug Act is not specifically designed to address labor issues, the unsanitary conditions would fall within its purview.