Find All Values of the Variable for Which the Rational $$\frac { x ^ { 2 } - 6 x - 16 } { x ^ { 2 } - 81 }$$

question 66

Multiple Choice

Find all values of the variable for which the rational expression is undefined.
- $$\frac { x ^ { 2 } - 6 x - 16 } { x ^ { 2 } - 81 }$$

• A) \(- 8,2\)
• B) \(- 8\)
• C) \(- 2,8\)
• D) \(- 9,9\)

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Marginal Utility

The additional satisfaction or benefit a consumer receives from consuming one more unit of a good or service.

Newspaper

A publication, generally made of paper and ink, that is distributed on a regular or daily basis and contains news, articles, advertisements, and other information of public interest.

Marginal Utility

The supplementary contentment or value a shopper obtains by buying an extra unit of a certain item or service.

Total Utility

The overall satisfaction or value a consumer receives from consuming a given quantity of goods or services.