You are allowed to compete in a team of up to 4 people for any given track. If you wish to compete individually in these tracks, that's perfectly fine!
If you came into Hack_NCState with a team in mind, that's great! If not, that's okay too! To help you build your team, if you so choose, there will be Team Formation starting after the Opening Ceremony at 10:00 AM (EDT) on February 3rd. This event will help you meet new people who are looking for teams and teams who are looking for more people.