Carla sells hot coffee cider and tea from a sidewalk cart nearWall Street in New

Carla sells hot coffee cider and tea from a sidewalk cart nearWall Street in New York City. Last month she sold $4500 worth ofproduct to 1000 customers. She spent $800 on buying her beveragesin bulk. Her monthly costs are: Utilities $100 Salary $2000Advertising $0 Insurance $0 Interest $0 Rent (cart) $600Depreciation $0. What are Carlas fixed costs?