Please show work and make sure its correct, thank you! Engineering Economics Analysis

in 7 the With an intial cost of $500,000 and a calvage years of $20,000, what is the third years depreciation using following methods? af Straight Line b) DDB (Double-declining balance) MACRS (7 answer all 3 methods please! year property) d) What is the depreciation in the 7th year for the DDB method? year (depreciation BV 1 2 3 4 5 G 7