document.write( "Question 128065: A car purchased in 1998 is currently valued at $12000. If it has decreased in value exponentially at a rate of 4% per year, determine the original cost of the vechicle.
\n" ); document.write( "I do know that the formula I should use is A=Ao(1-r)^t or some variation of it but I do not know how to fill it in ???????
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Algebra.Com's Answer #93778 by mr.barrett(5)\"\" \"About 
You can put this solution on YOUR website!
\"A%5B0%5D\"= original cost
\n" ); document.write( "A = current value = 12000
\n" ); document.write( "t = time in years = 2008 - 1998 = 10
\n" ); document.write( "r = rate of decrease = .04
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\n" ); document.write( "Substituting these values into \"A=A%5B0%5D%281-r%29%5Et\" we have \"12000=A%5B0%5D%281-.04%29%5E10\".

\n" ); document.write( "\"12000=A%5B0%5D%28.96%29%5E10\"

\n" ); document.write( "\"12000=A%5B0%5D%28.664832636%29\"

\n" ); document.write( "\"12000%2F.664832636=%28A%5B0%5D%28.664832636%29%29%2F.664832636\"

\n" ); document.write( "\"18049.66=A%5B0%5D\"
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