The Business model slide is where you help investors gain clarity on how you make money. It includes; revenue models, unit economics, and who you are selling to. This slide is typically placed after the Solution Slide or the Why Now Slide.
The Ask Slide is where you present the details about your fundraise and what the investment money will help you accomplish. On this slide, you should include; the amount you are raising, the runway it provides, the raise details, and the milestones that you are going to achieve with this money. The Ask slide is located just before your Closing Slide.