1. Why do we need to use variables in code?
2. What is the recommended way to name variables? Why does it matter?
3. What do data types mean and why do they matter for computation?
4. What are the four most popular data types in Python?
5. What does the @ operator stand for? Why doesn't it work?
6. What are the two operators that will work with strings?
7. How would you combine the results of two tests if we need to return a True value, but only when both of them return True? What about when at least one returns True? What about if only one (but not both) returns True?