Chapter 12 - Review - Page 907: 77

{$50$}

Work Step by Step

Step 1: $\log 2x=2$ Step 2: $2x=10^{2}$ Step 3: $2x=100$ Step 4: $x=\frac{100}{2}=50$ Therefore, the exact solution is {$50$}. Since the answer is a whole number, a four decimal approximation does not exist.

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