Based on the following facts, calculate depreciation expense to be recognized during 2019 using each of the methods noted below: Facts: Purchase date July 1, 2019 Original cost $49,000 Installation costs 3,000 Sales taxes 2,000 freight and delivery 1,000 2019 maintenance after installation 2,000 Residual value 5,000 Estimated useful life 5 years 2019 units of production 15,000 Total expected units of production 100,000 (a) Straight line method (b) Double declining balance ( c ) Units of production