SOLUTION: When will the value of the car be worth half its selling price if you bought it for $82,890? (use Logarithm)

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Question 437204: When will the value of the car be worth half its selling price if you bought it for $82,890? (use Logarithm)
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
You need to know how fast the price of the car is depreciating; in biological terms, it would take one "half-life" to drop to half its value.