(Use cels A2 to B15 from the given information above to complete this question. Hint: Recall that the double-declining-balanoe rate is double the straight-line rate [- 2 (1/useful lifel|- Be sure to include a reference to the useful life, cell B6, in your formula for depreciation expense. Your formula for depreciation expense should ensure that book value does not go below estimated residual value.) (Use cels A2 to 315 from the given information above to complete this question. Hint: Recall that the activity based depreciation rate = depreciable cost//total estimated units. Be sure to include a reference to estimated units, cell B7, in your formula for depreciation expense. Vour formula for depreciation expense should ensure that book value does not go below estimated residual value.)