Units Sold $($selling price per unit $$60)100|200|300$

Salary $$2,000|$ $$3,000|$ $$4,000$

Cost of Goods Sold $$1,500|$ $$3,000|$ $$4,500$

Cost$/$Unit of Depreciation $$30|$ $$15|$ $$10$

Rent $$2,000|$ $$2,000|$ $$2,000$

Which of the above costs behaves as a Variable Cost? If $300$ units are sold what is the net income?