A schoolteacher friend of yours is in the process of developing a smartphone app centered on engaging games that require high school students to use math to master the games. Your friend is planning to attend a new business conference in a few weeks that will feature a number of potential investors. Until now, your friend has focused on the technical aspects of building the app and hasnt written a business plan or talked to any potential customers. They are willing to do whatever it takes to get prepared for the conference. What would you tell them to focus on over the next few weeks to get ready for the conference?