I need help in B and C please Exact Photo Service purchased a new color printer at the beginning of Year 1 for $41,000.

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I need help in B and C please
Exact Photo Service purchased a new color printer at thebeginning of Year 1 for $41,000. The printer is expected to have afour-year useful life and a $4,100 salvage value. The expectedprint production is estimated at 1,500,000 pages. Actual printproduction for the four years was as follows:
The printer was sold at the end of Year 4 for $4,450.
Required
Compute the depreciation expense for each of the four years,using double-declining-balance depreciation. (Do not roundyour intermediate calculations. Round final answers to the nearestwhole dollar amount.)
Compute the depreciation expense for each of the four years, usingunits-of-production depreciation. (Round cost per unit tothree decimal places. Round other intermediate calculations andyour final answers to the nearest dollar.)
Calculate the amount of gain or loss from the sale of the assetunder each of the depreciation methods. (Amounts to bededucted should be indicated with minus sign.)