1. sandy's clothing shop has a markup of 45% on dresses. how much will sandy charge for a dress that costs the shop $48? 2. during todd's junior year in high school, he read 15 books. in his senior year, he read 18 books. find the percent of change. is it an increase or decrease? 3. the computer store pays $250 for each flat screen monitor. the store uses a 30% markup. what is the selling price for the flat screen monitor?