Answer and explanation

Correct answer: A. 64

  1. Step 1: By definition, log_4(x) = 3 means x = 4^3.
  2. Step 2: x = 64.
Answer
64.
Why not the others: '12' multiplies base and exponent instead of raising the base to the power; '81' swaps base and exponent; '7' adds base and exponent.

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Solve log 4(x) = 3. | Qatar Senior Secondary Certificate (Thanaweya)