A delivery van costing \(\$ 18,000\) is expected to have a \(\$ 1,500\) salvage value at the end of its useful life of five years. Assume that the truck was purchased on January 1, 2009. Compute the depreciation expense for 2009 and 2010 (its second year) under the following depreciation methods:

a. Straight-line.

b. Double-declining-balance.