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is the answer, i hope im right
Answer:
It is the branch of math that is in charge of dealing with letters known as variables.
Step-by-step explanation:
These variables are used to fill in the place of missing numbers in an equation or solution.Algebra is widely used all over the world in schools.
Taylor series is 
To find the Taylor series for f(x) = ln(x) centering at 9, we need to observe the pattern for the first four derivatives of f(x). From there, we can create a general equation for f(n). Starting with f(x), we have
f(x) = ln(x)

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Since we need to have it centered at 9, we must take the value of f(9), and so on.
f(9) = ln(9)

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Following the pattern, we can see that for
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This applies for n ≥ 1, Expressing f(x) in summation, we have

Combining ln2 with the rest of series, we have

Taylor series is 
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If 7 minutes is $2.45, then 13 minutes is $4.55 cuz 1 minute is 0.35 cents
2 because the 2 is the number on the left and can be bad and good and uhh yea