For each item above, indicate whether the cost is MAINLY fixed or variable with respect to the possible measure of activity listed next to it.

1.	Salary of production manager at a surfboard manufacturer	Surfboards produced
2.	Cost of solder used in making computers	Computers produced
3.	Cost of dough used at a pizza shop	Pizzas cooked
4.	Janitorial wages at a surfboard manufacturer	Surfboards produced
5.	Salary of the controller at a hospital	Number of patients
6.	Cost of sales at an electronics store	Dollar sales
7.	Cost of testing materials used in a medical lab	Tests run
8.	Cost of heating an electronics store	Dollar sales
9.	Cost of electricity for production equipment at a surfboard manufacturer	Surfboards produced
10.	Depreciation on shelving at a book store	Dollar sales