At the beginning of 2007, Texas Aero purchased a used Boeing jet at a cost of \(\$ 35,000,000\). Texas Aero expects the plane to remain useful for five years ( 6 million miles) and to have a residual value of \(\$ 5,000,000\). Texas Aero expects the plane to be flown 1 million miles the first year and 1.5 million miles the second year. Compute second-year depreciation on the plane using the following methods:

a. Straight-line 

b. Units-of-production 

c. Double-declining-balance.