Ingrid works as a sales representative for an oilfield suppl…

Ingrid works as a sales representative for an oilfield supply business in Alaska. She sells highly technical safety equipment to her customers. Ingrid visits customers on a regular basis to provide information about the new products and to solve technical problems that may arise as her clients use the equipment. For Ingrid, personal selling works better than other forms of promotion because of which of the following?

If a company rents a warehouse, it must pay rent for the war…

If a company rents a warehouse, it must pay rent for the warehouse, whether it is full of inventory or completely vacant. Other examples include executives’ salaries, interest expenses, depreciation, and insurance expenses. What types of costs remain unchanged as output is increased or decreased?