Answer and explanation

Correct answer: C. 81

  1. Step 1: By definition, log_3(x) = 4 means x = 3^4.
  2. Step 2: x = 81.
Answer
81.
Why not the others: '12' multiplies base and exponent instead of raising the base to the power; '64' swaps base and exponent; '7' adds base and exponent.

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