18. On April 30, 2007, Sphinx Products purchased machinery for $77,000. The useful life of this machinery is estimated at 7 years, with a $7,000 residual value. In its financial statements, Sphinx Products uses the 200%-declining-balance method and the half-year convention. Depreciation expense in 2007 and 2008 will be: (5 Points) $11,000 in 2007 and $18,857 in 2008. $22,000 in 2007 and $12,571 in 2008. $22,000 in 2007 and $7,857 in 2008. $11,000 in 2007 and $22,000 in 2008