Determine Whether the Sequence Is Geometric $7,21,63,189 , \ldots$ A)Geometric Sequence $r = 3$

question 282

Multiple Choice

Determine whether the sequence is geometric.If so, find the common ratio. $7,21,63,189 , \ldots$

• A)Geometric sequence, \(r = 3\)
• B)Not a geometric sequence
• C)Geometric sequence, \(r = 8\)
• D)Geometric sequence, \(r = 7\)
• E)Geometric sequence, \(r = 4\)

---

Definitions:

Reticular Activating System

A network of neurons located in the brainstem that is responsible for regulating wakefulness and sleep-wake transitions.

Coding System

A method used to categorize, encode, and facilitate the analysis of data, often used in research and information technology.

Facial Muscles

A group of skeletal muscles under the facial skin that control facial expressions.

Facial Feedback

The theory that facial expressions can influence emotional experiences.