Land Company acquired and put into use a machine on January 1, 1998, at a cash cost of \(\$ 120,000\) and immediately spent \(\$ 5,000\) to install it. The machine had an estimated useful life of eight years and an estimated salvage value of \(\$ 15,000\) at the end of this time. It was further estimated that the machine would produce 500,000 units of product during its life. In the first year, the machine produced 100,000 units.

Prepare journal entries to record depreciation to the nearest dollar for 1998, using:

a. Straight-line method.

b. Units-of-production method.

c. Sum-of-the-years'-digits method.

d. Double-declining-balance method.