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Mathematics 21 Online
OpenStudy (anonymous):

assume that a car costing 25000 depreciates exponentially and loses 20% of its value during the fifth year of its life. find its book value after the 3rd year of its use

OpenStudy (anonymous):

does this mean it loses 20% of its value every year?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

then the formula would look like \(25000\times (.8)^t\) for t in years

OpenStudy (anonymous):

because if it loses 20% of its value it retains 80%

OpenStudy (anonymous):

your job is to compute \(25000\times( .8)^3\) i would use a calculator

OpenStudy (anonymous):

if 6000 is invested at 5% interest, find the value (amount) of the account at the end of 5 years if the interest is compounded

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