Name three types of depreciation methods and provide their formulas for calculating depreciation. Explain circumstances when you might apply at least one of the method.

I already have the three types of depreciation methods down. I just need a circumstance that I would apply one of these methods to.

Straight Line Depreciation = The Cost of Asset minus the Salvage Value Divided by the Useful Lifespan of an Asset.

Double Declining Balance Depreciation = The Cost of the Asset minus The Accumulated Depreciation multiplied by double the expected life.

Units of Production Depreciation = The Number of Units Produced this period multiplied by Depreciation per unit.