When originally purchased, a vehicle costing $23,760 had an estimated useful life of 8 years and an estimated salvage value of $2000 After 4 years of straight -line depreciation, the asset's total estimated useful life was revised from 8 years to 6 years and there was no change in the estimated salvage value. The depreciation expense in year 5 equals $5,608.00. $2,720.00. $10,88000 $5,440.00 $2.88800