Choose yes or no to tell whether the expression represents a 20% discount off the price of an item that originally costs d dollars.

Option A and C is correct.

Step-by-step explanation:

Discount is defined as a reduced price on something being sold or at a price lower than that item is normally sold for.

For a 20% discount,

Given:

Initial prices = $ d

Discounted price = % discount * original/initial cost

= 20/100 * d

= 0.2 * d

Selling price = original cost - discounted price

= d - 0.2d

= 0.8 * d

= 0.8d