# math

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Value of a new car depreciates at a rate of 12% per year.

Approximately how many years will it take until the car is worth \$2300?

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What is the cost of the new car?

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\$23000, forgot.

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i will repost

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original value = 23,000

23,000 * .88^n = 2,300

.88 ^ n = .1

n log .88 = log .1
n = log .1 / log .88 =

n = 18 years

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is there a way to do this without using logarithms?

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and thx btw.

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Nope, except trial and error

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