Find the Sum of the Sequence $$\sum _ { k = 1 } ^ { 4 } 3 ^ { k }$$

question 16

Multiple Choice

Find the sum of the sequence.
- $$\sum _ { k = 1 } ^ { 4 } 3 ^ { k }$$

• A) 39
• B) 30
• C) 84
• D) 120

---

Definitions:

Type A Personality

A personality type characterized by competitiveness, high ambition, impatience, and a sense of urgency, often associated with a higher risk of heart disease.

Type B Personality

A personality characterized by a less competitive, more relaxed, and less stress-prone behavior pattern.

Social Support

The perception or reality of receiving support, encouragement, and assistance from friends, family, and others.

Group Development

The stages through which a group passes, typically involving forming, storming, norming, performing, and adjourning, as it matures and becomes more effective.