You have purchased a mobile home for $20,000 which depreciates at 10% per year.

Mathematics

1 answer:

iragen [17]3 years ago

8 0

Answer:

C. Three

Step-by-step explanation:

We want to solve the equation for n:

14,580 = 20,000(9/10)^n

14580/20000 = 729/1000 = (9/10)^n

(9/10)^3 = (9/10)^n . . . . . . write the left side as a cube

3 = n . . . . . . equate exponents

After year 3, the value will be $14,580.

_____

You can use logarithms to find n:

log(0.729) = n×log(0.9) . . . . . . taking the log of the 2nd line above

log(0.729)/log(0.9) = n = 3

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Answer:

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Step-by-step explanation:

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$Z = \frac{X - \mu}{\sigma}$

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