Weir Service Company purchased a copier on January 1, 2014, for $25,000 and paid an additional $500 for delivery charges. The copier was estimated to have a life of four years or 1,000,000 copies. Salvage was estimated at $1,500. The copier produced 250,000 copies in 2014 and 270,000 copies in 2015.

Required
Compute the amount of depreciation expense for the copier for calendar years 2014 and 2015, using these methods:
a. Straight-line.
b. Units-of-production.
c. Double-declining-balance.