Your question is Power BI and DAX Modeling. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain the difference between calculated columns and measures, and walk me through your experience with DAX formulas, creating relationships between tables, and building interactive Power BI dashboards using data modeling best practices.