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Deprecontion by Three Methods; Partial Years Retdue Company pirctiased equipmetit en October 1 for 344,590 . The equipment was expected to have a cseful hic of three yeats, or 6,100 coeratirg hours, and a resicuai valu 51,690 . The equipement was used for 1,100 bours doing Yeat 1,2,100 hours in Year 2,1,800 hours in Year 3 and 1,100 hours in Year 4. Required: Determine the amiount of depreciation expense for the years enided December 31, Year 1, Year 2, Yeat 3 , and Year 4 , by (a) the araight-line incthod, (b) the units-at activity method, and (c) the dooble-declirang- bstance methos. Noth: Found all final vahues for esch depreciation method and rach year to she nearest whole collat, a. Straight-line method th- Unats of-activity miethod