1) The new laptop computer which sold for $1150 in 2005 has the book value of $550 2 years later. If it continues to depreciate at same rate, how long will it take for computer to have the book value of $200.
2) You have $1200 to invest. Is it better to invest the money continously for 5 years at 3.2% interst or compound monthly for 5 years at 4% interests?