Answer
The solution is between 5 and 6.
Work Step by Step
Create a table to approximate x.
$\underline x\ \ \ \ \underline{6+2x}$
$4\ \ \ \ \ \ 14$
$5\ \ \ \ \ \ 16_\longrightarrow$ the solution is between 5 and 6
$6\ \ \ \ \ \ 18$
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