Aggie Company purchased equipment on March 1, 2011 for $29,000. It is estimated that the equipment will have a $500 salvage value at the end of it 6-year useful life. It is also estimated that the equipment will produce 30,000 units over its 6 year useful life. If 4,500 units of product are produced in 2011, 4,800 units in 2012 and 5,100 units are produced in 2013, what is the book value of the equipment at December 31, 2013? The company uses the units-of-production depreciation method. Group of answer choices $14,820 $15,320 $15,080 $14,750 $16,032