The price of computers has been dropping steadily for the past ten years. If a desktop PC cost $6,400 ten years ago, and the same computing power cost $1,800 three years ago, find the rate of decrease per year. (Assume a straight-line model). Round your answer to the nearest cent.
?
A. $667.34 per year
B. $328.54 per year
C. $219.38 per year
D. $657.14 per year
E. $686.14 per year
Answer: D
Mathematics
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