Alex Company purchased a lathe on January 1, 2017, at a cost of $45,000. At the time of purchase, the lathe was expected to have a five-year economic life and a residual value of $3,000. Alex uses straight-line depreciation. At the beginning of 2019, Alex estimated the lathe to have a remaining life of four years with no residual value. For the year ended December 31, 2019, Alex would report depreciation expense of: