Lou’s Shoes is having its annual Flag Day Sale and is offering a 25% discount on all regularly priced shoes. Kayla spends $13. 50 buying sandals and sneakers. Determine which equation represents how much Kayla will spend on sandals after the discount. $13. 50 = 0. 75(x 10) $13. 50 – 10 = 0. 75x $13. 50 10 = 0. 75x $13. 50 = 0. 25(x 10).