waecmaths question:
If ${{\log }_{2}}(3x-1)=5$, find x
Option A:
2.00
Option B:
3.67
Option C:
8.67
Option D:
11.00
waecmaths solution:
$\begin{align} & {{\log }_{2}}(3x-1)=5 \\ & 3x-1={{2}^{5}} \\ & 3x-1=32 \\ & 3x=33 \\ & x=11 \\\end{align}$
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