The answer you are looking for is "A Constant Slope",.
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Answer:
-66+12 or -54
Step-by-step explanation:
To remove the parenthesis multiply the number outside of the parenthesis (in this case -6) to the numbers inside of the parenthesis (11, and -2).

A negative multiplied by a positive is a negative.

A negative multiplied by a negative is a positive.

The girth because it makes the whole tree bigger and the branches and everything would get bigger too