The ledger of Turner Rental Company on December 31, 2013 includes the following selected accounts before the annual adjusting entries have been made. Assume any account that needs to be adjusted that is not listed below has a zero balance before adjustment. The equipment was purchased on January 1, 2011 and cost $25,000. Depreciation is $1,000 per year. After the proper adjusting entry has been made, what is the book value of the equipment? Do not enter commas or dollars signs, for example, enter $20,000 as 20000