Welcome to your interview.
The question is on your right: Table Joins and Row Counts. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
How would you join to tables, and how would you get the number of rows from a table?