Austin is going to pack snacks to share with his friends on a hike. He has 19 snacks to choose from: 8 are salty and 11 are sweet. He is going to choose 5 snacks. (a) In how many ways can Austin choose 5 snacks if the number of sweet snacks must be greater than 2? X (b) In how many ways can Austin choose 5 snacks if the number of sweet snacks must be less than or equal to 2? O