TechPro offers instructional courses in website design. The company holds classes in a building that it owns. The cost object is an individual class. Classify each of TechPros costs below as direct or indirect.

1. Supervisor salaries 2. Depreciation on computers used for classes 3. Extra paper for student notes 4. Supervisor salaries 5. Depreciation-Classroom furniture 6. Computer printer ink 7. Depreciation on classroom printers 8. Classroom building insurance used up