A store has a sale where every item has a sale price that is \( 20 \% \) less than the regular price. Write an expression that represents the sale price of an item if the regular price is \( p \) dollars.

To find the sale price of an item with a regular price of \( p \) dollars, you need to calculate \( 20\% \) of \( p \), which is \( 0.20p \), and then subtract that from the regular price. Therefore, the expression for the sale price is \( p - 0.20p \), or simply \( 0.80p \). This means the item is being sold for \( 80% \) of its regular price! If you're shopping during a big sale, remember to double-check your calculations! It’s easy to mistakenly think you're saving more than you are. Always write down the regular price and calculate \( 20\% \) before deducting it to clarify the final amount. Happy shopping!