Theorists facing tenure track faculty interviews The faculty interview is based on the context of a department stressing on industry interaction. When asked about how to buy lab equipments and find funding, may a theorist answer the search committee that he/she does theory work mostly and therefore doesn't need much money or experiment facilities to start up? Anyway, these questions are hard for the present graduate students and postdoc applicants to answer, as they have no chance to be exposed to these things.
If you don't need lab equipment or space to do your research then just say so and explain what, if any, support you do need to conduct your research (e.g. travel funds, a desktop computer, a chalkboard, coffee, etc.)  

If there is an expectation that you will bring in external funding to support graduate students, then you need to be prepared to respond to questions about possible sources of funding and how you will involve graduate student research assistants in your research in a way that will be considered appropriate by both the funding agency and your future institution.   Not being prepared to answer this question could very well cost you the position.