Capital One Sr. Business Analyst interview questions

After a half hour phone interview I was invited to Richmond for a "Super Day" type interview. Prepare to be wooed. Stayed at the Hilton and got a full tour of their Google/Space City "Campus" which includes perks like an onsite chiropractor and various full sized athletic fields. Note: I'm a liberal arts grad, and was the only one from our group of 14 that powerday. The first case was about de/re-regulating a utilities market and the effect it would have on price. This one was easy since you can propose and evaluate methods of regulating markets through other real-world examples (ex: power, water, cable, airlines) and the math was simple. I was only asked 3 behavioral questions, so I would pick robust examples. The last case was far more difficult and was essentially a series of math problems in a general business context. The case included solving for profits, break-even and possibly a maximization/curve, which is where I got stuck. All three interviewers I met with had masters in statistics or engineering. I think this interview/position is certainly possible for a "creative" with some studying but is far better suited for a "quant".