8 A toy store is having a sale All items are half price Rick buys 5 toy cars and 2 dinosaurs Let c represent the regular price of a toy car and let d represent the regular price of a dinosaur Which expression does NOT represent the total cost of his purchases after the discount A B A B 0 5 5c 0 5 2d 5c 2d 2 A B 9 A clothing store has marked down the original price of a hat h by 8 The original price of a pair of pants p was reduced by 17 George bought 2 hats and 2 pairs of pants Which expression below could NOT be used to determine the total cost of his purchase before tax 2h 2p 8 17 2h 2 8 2p 2 17 C D 2 6h 4q 2 6h 2 4q 5c 2d 5c 2d 2 C 2 h 8 2 p 17 2 h 8 p 17 D 10 Mark and Jenny each have h hexagons and q quadrilaterals Which expression below could NOT represent the number of sides they have on their combined shapes C D 6h 4q 6h 4q 2 6h 2 4g