Question

Joe is buying gift cards that are on sale for 15% off. He uses c – 0.15c to determine the sale price of gift cards. What is an equivalent expression that Joe could also use to determine the sale price of a gift card?

Answer 1

Joe could use the expression c - 0.15c or 0.85c to determine the sale price of a gift card with a 15% discount.

Step-by-step explanation:

To determine the sale price of a gift card with a 15% discount, Joe could use the expression c - 0.15c. This expression represents the original price (c) minus 15% of the original price (0.15c). An equivalent expression that Joe could use is 0.85c, which represents 100% minus 15% of the original price.

Let's take an example: If the original price of a gift card is $100, using the expression c - 0.15c, we would have:

$100 - 0.15 x $100 = $100 - $15 = $85

Using the equivalent expression 0.85c, we would have:

0.85 x $100 = $85

Both expressions yield the same result, which is the sale price of the gift card with a 15% discount.

Answer 2

0.85c

Step-by-step explanation:

Given :

Discount on sale = 15%

Price of gift card at discounted price = c - 0.15c

Equivalent expression could be :

(100% - 15%) * price

Price = c

(1 - 0.15)c

0.85c