## A 9-passenger van shuttles athletes between venues at the Canada Summer Games. If 22 athletes need to get to the track and field stadium, in how many ways can passengers be chosen for

A 9-passenger van shuttles athletes between venues at the Canada Summer Games. If 22 athletes need to get to the track and field stadium, in how many ways can passengers be chosen for a) the bus’s first trip? b) the bus’s second trip? EXPERT ANSWER