Copy the example data in the following table, and paste it in cell Al of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data. Data Description $30,000 Cost $7,500 Salvage value 10 Years of useful life Result Formula Description $2,250 SLN(A2, A3, A4) The depreciation allowance for each year.