Not sure if I'm solving correctly for number 10

10. On the first day of its fiscal year, Counter Balance Company purchased a new computer system for a total cost of $40,000. The computer system is expected to have a life of 10 years with a residual value of $7,000. If the company uses the double-declining-balance method, its depreciation expense for this computer system in the first year will be a) $6,600. $4,000.usethellipe,121012= c) $3,300. in years 11. The depreciation method that does not initially use the residual value in depreciation calculations is the a) direct method. b) double-declining balance method. c) straight-line method. d) units-of-production method