Which expression represents the cost of the purchase after applying a $5 coupon off the price p?
Understand the Problem
The question is asking which mathematical expression represents the cost of a purchase after applying a $5 coupon to the original price (p). This requires understanding how to adjust a price based on a discount.
Answer
The cost of the purchase after applying the coupon is $p - 5$.
Answer for screen readers
The expression representing the cost after applying the $5 coupon is $p - 5$.
Steps to Solve
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Identify the Original Price The original price of the purchase is represented by the variable $p$.
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Apply the Coupon Discount To find the cost after applying the $5 coupon, subtract $5$ from the original price: $$ \text{Cost after coupon} = p - 5 $$
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Select the Correct Expression The expression that represents the cost of the purchase after using the $5 coupon is $p - 5$.
The expression representing the cost after applying the $5 coupon is $p - 5$.
More Information
Using a coupon reduces the total cost by the amount of the coupon. Here, since the coupon is $5 off, the cost reduces by that amount from the original price.
Tips
- Mixing up addition and subtraction; remember that a coupon deducts from the price, not adds to it.
- Misinterpreting the problem; always focus on what the coupon affects—the original price.
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