Final answer:
Lacy has to pay a total of $4.60 for three rolls of wrapping paper and a box of candy canes at an 80% discount before tax.
Step-by-step explanation:
The subject of this question is Mathematics, specifically focusing on percentage discounts and totaling costs. To calculate the total amount Lacy has to pay before tax for the items purchased at an 80% discount, we first find out the discount on each item:
- Original price of one roll of wrapping paper = $4.99, 80% discount on one roll = $4.99 × 0.80 = $3.99, so the discount for three rolls of wrapping paper = 3 × $3.99 = $11.97.
- Original price of the box of candy canes = $2.99, 80% discount on the candy canes = $2.99 × 0.80 = $2.39.
Next, we calculate the price Lacy has to pay after the discount for each item:
- Price after discount for three rolls of wrapping paper = $4.99 × 3 - $11.97 = $4.00.
- Price after discount for the candy canes = $2.99 - $2.39 = $0.60.
Finally, we add up the discounted prices to find the total:
- Total price to pay before tax = $4.00 + $0.60 = $4.60.
To find out how much Lacy had to pay before tax, we need to calculate the discounted price for each item and then add them together. The wrapping paper is originally priced at $4.99 each, and since Christmas candy and items are 80% off at Walgreens, Lacy would pay 20% of the original price for each roll of wrapping paper.
20% of $4.99 is 0.2 x $4.99 = $0.998, which means Lacy would pay $0.998 for one roll of wrapping paper. Since she got three rolls, she would pay 3 x $0.998 = $2.994 for the wrapping paper.
Similarly, the box of candy canes is originally priced at $2.99, and she would pay 20% of the original price for it. 20% of $2.99 is 0.2 x $2.99 = $0.598, which means Lacy would pay $0.598 for the box of candy canes.
To find the total amount Lacy had to pay before tax, we add the cost of the wrapping paper ($2.994) and the cost of the candy canes ($0.598): $2.994 + $0.598 = $3.592.