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elixir [45]
2 years ago
12

Math please help!!!!

Mathematics
1 answer:
Evgen [1.6K]2 years ago
8 0

Answer:

6.3 years

Step-by-step explanation:

Given

P = 22400 --- initial value

r = 12\% -- rate

A = P(0.88)^t --- function

Required

Find t when A = 10000

We have: A = P(0.88)^t

Substitute: A = 10000 and P = 22400

10000 = 22400 * 0.88^t

Divide both sides by 22400

0.4464 = 0.88^t

Take log of both sides

\log(0.4464) = \log(0.88^t)

Apply law of logarithm

\log(0.4464) = t\log(0.88)

Solve for t

t = \frac{\log(0.4464)}{\log(0.88)}

t = \frac{-0.3503}{-0.0555}

t = 6.31

t \approx 6.3

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