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➷ A variable is an unknown number that is represented by a letter, for example, x.
It is usually found in an algebraic expression.
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➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
TROLLER
Here is your function:

You're looking for f(-1). To get your answer, you have to replace all the x's with -1.
Here is your new equation:

Multiply 2 by -1

<em>Remember:</em>
MULTIPLYING
- Positive(+) times negative(-) is equal to negative
- Positive(+) times positive(+) is equal to positive
- Negative(-) times negative(-) is equal to positive
- Negative(-) times positive(+) is equal to negative
DIVIDING
- Positive(+) divided by positive(+) is equal to positive
- Positive(+) divided by negative(-) is equal to negative
- Negative(-) divided by positive(+) is equal to negative
- Negative(-) divided by negative(-0 is equal to positive
Since you're multiplying a negative number by a positive number, the answer will be negative.
Here is your new equation:

Add -2 and 2:

That means your answer is 0
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<em>If you have any questions, feel free to ask in the comments! :)</em>
Is it obvious the 10% of the book's price is the $5 right?
So the book's price is $50.
X/-3 / x^6 = x/-3 * 1/x^6 = x/ -3x^6= 1/ -3x^5