Using cell references please solve.

Sullivan Ranch Corporation has purchased a new tractor. The following information is given: Prepare the following Straight Line depreciation schedule by using the excel SLN FUNCTION (fx) to calculate the 13 Depreciation Expense for Years 1-4 in the Depreciation Expense column. Enter formulas or absolute cell references for the remaining cells. Prepare the following Double-Declining-Balance depreciation schedule by using the Excel DDB FUNCTION (fx) to calculate Depreciation Expense for Years 1-4 in the Depreciation Expense column. Enter formulas or absolute cell references for the remaining cells