Add Simplify, If Possible $$\frac { x + 7 } { x - 3 } + \frac { x - 5 } { 3 - x } + \frac { 4 ( x + 1 ) } { x - 3 }$$

question 13

Multiple Choice

Add. Simplify, if possible.
- $$\frac { x + 7 } { x - 3 } + \frac { x - 5 } { 3 - x } + \frac { 4 ( x + 1 ) } { x - 3 }$$

• A) \(\frac { 6 x + 6 } { x - 3 }\)
• B) \(\frac { 4 x + 16 } { ( x - 3 ) ^ { 3 } }\)
• C) \(\frac { 4 x + 13 } { x - 3 }\)
• D) \(\frac { 4 x + 16 } { x - 3 }\)

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Definitions:

History Effect

As a threat to the internal validity of an experiment, refers to any outside event that is not part of the manipulation that could be responsible for the results.

Instrument Decay

As a threat to internal validity, the possibility that a change in the characteristics of the measurement instrument, including human observers, is responsible for the results.

Journal

A periodical publication that contains scholarly articles and research findings on a specific academic field or area of interest.

Exposure

refers to the extent or duration to which an individual is subjected to a particular environment, substance, or condition.