A clock is constructed using a regular polygon with 60 sides. The polygon rotates each minute, making one full revolution each hour. How much has the polygon rotated after 7 minutes?

A full revolution is 360°, completed in 60 minutes, so the polygon turns 360° ÷ 60 = 6° each minute. After 7 minutes, it has rotated 7 × 6° = 42°. The correct choice is 42°.

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