Answer:
2.3%
Step-by-step explanation:
18000 = 15000( 1 + i)^8
Divide both sides by 15000
1.2 = (1 + i)^8
Take both sides to the 1/8 power
1.2^(1/8) = 1 + i
1.023051875220463 = 1 + i
Subtract 1 from both sides
i = 0.023051875220463
~ 2.3%
Let
and
be these consecutive integers. For some base
, we can write


If

then

Now,



Squaring both sides gives

and so



(because the base has to be non-zero)
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8=12-8x
-4=8x
-4÷8=8x÷8
-0.5=x