Write the Domain in Interval Notation $$r ( x ) = \frac { - 14 } { x ^ { 2 } + 81 }$$

question 278

Multiple Choice

Write the domain in interval notation.
- $$r ( x ) = \frac { - 14 } { x ^ { 2 } + 81 }$$

• A) \(( \infty , 0 ) \cup ( 0 , \infty )\)
• B) \(( \infty , \infty )\)
• C) \(( \infty , - 9 ) \cup ( 9 , \infty )\)
• D) \(( - \infty , - 9 ) \cup ( - 9,9 ) \cup ( 9 , \infty )\)

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Definitions:

Pressure Reduction

Strategies or devices used to alleviate pressure on specific areas of the body, often to prevent pressure ulcers or enhance comfort.

Patient Movement

The process of transferring patients from one location to another within or between medical facilities, often involving specialized equipment and protocols to ensure safety.

Pressure Relief

Methods or devices used to alleviate pressure in a specific area, often to prevent or treat pressure sores in patients who are immobile.

Pressure Ulcer Formation

The development of injuries to the skin and underlying tissue caused by prolonged pressure on the skin, commonly affecting bedridden or immobile patients.