Please help me with what formulas to type in on excel and not just the answers please and thank you

Sullivan Ranch Corporation has purchased a new tractor. The following information is given: $ 150.000 $ 10,000 4 1200 Cost: Estimated Residual: Estimated Life in years: Estimated Life in hours: Actual Hours: Year 1 Year 2 Year 3 Year 4 360 270 350 220 Prepare the following Straight Line depreciation schedule by using the excel SLN FUNCTION (fx) to calculate the Depreciation Expense for Years 1-4 in the Depreciation Expense column. Enter formulas or absolute cell references for the remaining cells. Year SULLIVAN RANCH CORPORATION Depreciation Schedule Straight Line Method End of year amounts Depreciation Accumulated Expense Depreciation Book Value $ 35,000 $ 35.000 $ 115.000 $ 35,000 $ 70,000 $ 35,000 105,000 2 3 Sheet1 Prepare the following Units-of-Production depreciation schedule by entering formulas. Use absolute cell references when appropriate. SULLIVAN RANCH CORPORATION Depreciation Schedule-Units-of-Production Method End of year amounts Year Depreciation Accumulated Book Value Expense Depreciation 1 2 3 4 Total Prepare the following Double-Declining-Balance depreciation schedule by using the Excel DDB FUNCTION (Ex) to calculate Depreciation Expense for Years 1-4 in the Depreciation Expense column. Enter formulas or absolute cell references for the remaining cells. SULLIVAN RANCH CORPORATION Depreciation Schedule-Double-Declining-Balance Method End of year amounts Year Depreciation Accumulated Book Value Expense Depreciation