a pen usually costs $c but is now on sale for a 15% discount. Write an expression to describe the value of the discount

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After the experience with great britain having a monarchy, the united states realized that everyone needed to have a voice in the government. the fact that americans had no voice was the main reason for the war. thus, they created a democracy, where the people voted for their representatives and the government ruled with the consent of the people.

Ihope this and i’m only writing this because my thing has to be longer