A $5 million oil drilling rig has a 5 year depreciable life and a $250,000 salvage value at the end of that time.

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I mainly need parts a and b. Please solve without excel because I need to see the formulas used by hand, thank you!

11-11 A $5 million oil drilling rig has a 5-year depreciable life and a $250,000 salvage value at the end of that time. (a) Determine which one of the following meth- ods provides the preferred depreciation schedule: 100% bonus depreciation or MACRS. (b) Show the depreciation schedule for the preferred method. (c) Search for new oil rig technologies and describe three that improve environmental impact. L iuct nurchased a 11-16 Units a ma able and depr set ciati 10-Y 11-17 Con depi