To convert \( 0.82\overline{82} \) (where \( \overline{82} \) indicates that "82" repeats indefinitely) to a rational number, you would set \( x = 0.82\overline{82} \).
Since the repeating part has 2 digits, you should multiply both sides by \( 100 \) (which is \( 10^2 \)) to move the decimal point two places to the right.
So you would multiply by \( 100 \):
\[ 100x = 82.82\overline{82} \]
This allows you to set up an equation that can eliminate the repeating part when combined with another equation derived from the original \( x \).