(15 points) On January 1, 2015, Boston Company purchased a heavy duty machine having an invoice price of $13,000. Boston paid transportation and installation costs totaling $3,000. The machine is estimated to have a 4-year useful life and a $1,400 residual value. Calculate depreciation expense and book value for 2015-2018, assuming double declining-balance method of depreciation.

Digitalhealth electronics inc. is a company that builds diagnostic devices. it was the first company to develop a compact mri scanner by reconfiguring the components of the mri technology. this smaller and user-friendly version of the huge mri scanner created demand from small hospitals, nursing homes, and private practice doctors who were earlier dependent on the scanning machines in large hospitals. which of the following types of innovations does this scenario best illustrate? a. disruptive innovation b. incremental innovation c. radical innovation d. architectural innovation