3.Lockard Company purchased machinery on January 1, 2010 for 80,000. The machinery is estimated to have a salvage value of $8,000 after a useful life of 8 years. A) Compute 2010 depreciation expense using the straight-line method. B) Compute 2010 depreciation using method assuming the machinery was purchased on September 1,2010. 4.Use the information for Lockard Company given in 3. A) Compute 2010 depreciation expense using the sum-of the years -digits method. B) Compute 2010 depreciation expense using the sum-of-the-years-digits method assuming the machinery was purchased on April 1,2010 5. Use the information for Lockard Company given in 3. A) compute 2010 depreciation expense using the double-declining-balance method. B) Compute 2010 depreciation expense using the double-declining-balance method assuming the machinery was purchased on October 1,2010