Cookouts, BBQs, whatever you want to call it, millions of people will throw some burgers and dogs on the grill Tuesday to celebrate Independence Day. Americans are expected to spend $7.15 billion on July Fourth food and eat some 150 million hot dogs.When you get together with your family and neighbors, sometimes small talk can be hard to come by. Here's a quiz to help fill the time, based on information from the U.S. Census Bureau and Commerce Department: Copyright 2017 NPR. To see more, visit http://www.npr.org/.