Question
If \( \log _{2}(3 x+4)=5 \), then \( x=\square \) You may enter the exact value or round to 4 decimal places. Submit and End
Ask by Reyes Cole. in the United States
Mar 18,2025
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Answer
\( x = \frac{28}{3} \) or \( x \approx 9.3333 \)
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To solve the equation \( \log_{2}(3x+4)=5 \), we can rewrite it in exponential form. This means that: \[ 3x + 4 = 2^5 \] Calculating \( 2^5 \) gives us 32: \[ 3x + 4 = 32 \] Next, subtract 4 from both sides: \[ 3x = 32 - 4 \] This simplifies to: \[ 3x = 28 \] Finally, divide both sides by 3 to solve for \( x \): \[ x = \frac{28}{3} \approx 9.3333 \] Therefore, to four decimal places, \( x \approx 9.3333 \).