Question 2: (4 points) South Airlines purchased a 747 aircraft on January 1, 2015, at a cost of $35,000,000. The estimated useful life of the aircraft is 10 years, with an estimated salvage value of $5,000,000. On January 1,2018 the airline revises the total estimated useful life to is years with a revised salvage value of $3,500,000. Requirement: 1. Compute the depreciation and book value at December 31,2017 using the straight-line method and the double-declining-balance method. 2. To your understanding, in banks which kind of property, plant and equipment should be applied the straightline method, and which ones should be applied the accelerated depreciation method