Jennings Advertising, Inc. reported the following in its December 31, 2021, balance sheet: Equipment $700,000 Less: Accumulated depreciation-equipment$276,000 In a disclosure note, Jennings indicates that it uses straight-line depreciation over 14 years and estimates salvage value at 8% of cost. What is the average age of the equipment owned by Jennings? 5 years. 9 years. 6 years 9.9 years