Use the equation 2,401 = 76 – 2x. What power of 7 is 2,401?

Multiply 7 by itself repeatedly: 7 × 7 = 49, 49 × 7 = 343, and 343 × 7 = 2,401. Therefore, 2,401 is 7 to the fourth power, so the correct choice is 4.

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