Your question is Regression Analysis for Campaign Performance. 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).
You are analyzing marketing performance and want to understand how one outcome changes with several inputs. You need a structured way to quantify relationships, check whether they are statistically meaningful, and avoid misleading conclusions from poor model setup.
How would you conduct a regression analysis?