Jimmy brings $24 to the county fair for rides. Roller coaster rides cost $2, and the spinning cup rides cost $3. But Jimmy knows that he gets queasy if he takes more than 6 roller coaster rides or more than 8 spinning cup rides. Let r represent the number of roller coaster rides and let s represent the number of spinning cup rides. In addition to r≥0;s≥0, which is a set of of inequalities that Jimmy can use to guide his choice of rides?