Your question is Insurance Payment Rate 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 how you would interpret a graph and evaluate trends using a simple linear model for payment rate in an insurance context, including how you would reason about the maximum payment rate and use cumulative distribution functions and PDFs.