Please show work using formulas.

Revision of Depreciation Associated Clinic purchased a special machine for use in its laboratory on January 2, 2013. The machine cost $98,000 and was expected to last 10 years. Its salvage value was estimated to be $6,000. By early 2015, it was evident that the machine will be useful for a total of only seven years. The salvage value after seven years was estimated to be $7,500. Associated Clinic uses straight-line depreciation. Compute the proper depreciation expense on the machine for 2015. Depreciation Expense for 2015: Check