Jackie has fewer than 20 h to work on her jewelry. it takes her half an hour to make a necklace and an hour to make a bracelet. she wants to make x necklaces and y bracelets, and she wants at least twice as many bracelets as necklaces. select all inequalities that model this situation. y> 2x x> 0 0.5x+y≤20 0.5x+y< 20 x≥0 y≥2x adam needs both small and large cones to set up for a soccer practice. he knows there are fewer than 30 cones in the storage room. he needs at least a dozen large cones. let x represent the number of small cones and y represent the number of large cones. select all inequalities that model this situation. y≥12 x+y≤30 x> 0 y> 12 x+y< 30 x≥0