Has anyone worked on the Service Cloud Basics Module on Trailhead?

I need help on figuring out Rule Criteria for the Escalation Rule on 'Automating Case Management' step. The details are jotted down in the attached file.

This question is highly likely to be on the Exam. So, let us all work towards it together. I can walk anyone through the steps that come before, or up to the point where I am stuck :(