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| Question 1108946:  Peyton bought a car for $38,000 an it’s value depreciates 18% each year. After how many years will his car be worth less than $10,000?
 Answer by stanbon(75887)
      (Show Source): 
You can put this solution on YOUR website! Peyton bought a car for $38,000 an it’s value depreciates 18% each year. After how many years will his car be worth less than $10,000? ------
 Each year the car is worth 82% of last year's value.
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 Equation::
 38000*0.82^x < 10,000
 0.82^x < 5/19
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 x < log(5/19)/log(0.82)
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 x < 6.72 years
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 Cheers,
 Stan H.
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