Describe a real-life situation involving markup, markdown, or discount that the equation y=x+0.4x could represent.

the retail price y in dollars for an item with the original cost and a markup of 40%

O the discount price y in dollars for an item with the original cost and a discount of 40%

O the sale price y in dollars of an item with the original cost and a markdown of 40%

O the discount amount y in dollars for an item with the original cost and a discount of 40%