Computing cost of goods sold

The Tinted View, a retail merchandiser of auto windshields, has the following information:

Web site maintenance

$ 7,100

Delivery expense

900

Freight in

2,900

Purchases

39,000

Ending inventory

4,900

Revenues

57,000

Marketing expenses

9,900

Beginning inventory

7,900

Requirement

1. Compute The Tinted View’s cost of goods sold.