In the expressions below, $v$ represents the original value of the item.
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The value of a baseball card increased by $10\%$ . Which expression represents the new value of the baseball card?
The value of a cell phone decreased by $10\%$ . Which expression represents the new value of the cell phone?
$1.1v$$v\ -\ 0.1v$$v\ +\ 0.1$$v\ -\ 0.1$$0.1v$$v\ -\ 0.9v$
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