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solve: \\(\\log_{2}(3x + 8) = 5\\) which is an equivalent equation? \\(…

Question

solve: \\(\log_{2}(3x + 8) = 5\\)
which is an equivalent equation?

\\(2^{5} = 3x + 8\\)
\\(5^{2} = 3x + 8\\)
\\(2^{5} = \log_{2}(3x + 8)^{2}\\)
\\(5^{2} = \log_{2}(3x + 8)^{5}\\)

Explanation:

Identify the given logarithmic equation

Using the Logarithmic Functions knowledge point

$$ \log_{2}(3x + 8) = 5 $$

Apply the definition of a logarithm

Using the Logarithmic and Exponential Inverses knowledge points

$$ \log_{b}(Y) = X \iff b^X = Y $$
$$ 2^5 = 3x + 8 $$

Answer:

  • (A) \(2^5 = 3x + 8\) (Correct answer)
  • (B) \(5^2 = 3x + 8\)
  • (C) \(2^5 = [\log_2(3x + 8)]^2\)
  • (D) \(5^2 = [\log_2(3x + 8)]^5\)