PLEASE HELP ANSWER THE FOLLOWING

1A) On January 1, 2014, Garr Company acquired machinery at a cost of $320,000 The machinery was being depreciated using the double declining balance method. It had an estimated useful life of 8 years and no residual value. At the beginning of 2016, Garr changed to the straight-line method of depreciation. make any journal entry required to account for this change.

1B) Gundrum Inc. purchased equipment on January1, 2012 for $850,000. The equipment was expected to have a useful life of 10 years and a salvage value of $30,000. Gundrum uses the straight line method of depreciation. At the beginning of 2017, Gundrum determined that the total estimated life of the equipment was 13 years and that the residual value would be $10,000. make the journal entry necessary to account for this change.