Question 20 (2.5 points) 4) Listen Quigley, Inc. purchased a machine 4 years ago for $800,000. The machine is being depreciated on a straight-line basis to a salvage value of zero over its estimated useful life of 10 years. What is the annual depreciation expense on this machine? $70,000 None of the other answers in this list are correct. $1,000,000 $60,000 $800,000 $700,000 $900,000 $80,000 $50,000