Answer:
A) to determine the cost of the asset being depreciated we must use the first year's depreciation using the double declining method to find 40% of the asset's value:
40% of the asset's value = $29,200
asset's value = $29,200 / 40% = $73,000
B) salvage value = asset's value - total depreciation = $73,000 - $65,700 = $7,300