The annual net sales (revenue) earned by the Finnish cell phone company Nokia from January 1999 to January 2004 can be approximated by  billion euros per year  where t is time in years (

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?

A. Total revenue ? 150 billion euros
B. Total revenue ? 180 billion euros
C. Total revenue ? 160 billion euros
D. Total revenue ? 170 billion euros
E. Total revenue ? 190 billion euros


Answer: D

Mathematics

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