The items arranged from most expensive to least expensive is DVD, jeans, toaster, headphones.
A mark up increases the price of an item while a mark down reduces the price of an item.
Price after a mark up = (1 + mark up) x base price
Price after a mark down = (1 - mark down) x base price
Price of the toaster after the mark up: (1.36 x $23.35 = $31.76
Price of the DVD after the mark up: 1.66 x $20.36 = $33.80
Price of the head phones after the mark down: (0.44 x $69.09 = $30.40
Price of the jeans after the mark down: 0.59 x $55 = $32.45
A similar question was solved here: https://brainly.com/question/25717996
