Find a Formula for A_n for the Arithmetic Sequence $a _ { n } = 7 \left( - \frac { 1 } { 8 } \right) ^ { n - 1 }$

question 29

Multiple Choice

Find a formula for a_n for the arithmetic sequence. ?
A₁ = 7,d = -8
?

• A) \(a _ { n } = 7 \left( - \frac { 1 } { 8 } \right) ^ { n - 1 }\)
• B) \(a _ { n } = - 8 + 7 ( n - 1 )\)
• C) \(a _ { n } = 7 - 9 n\)
• D)? \[a _ { n } = 15 - 8 n\]
• E) \(a _ { n } = 7 - 8 ^ { n - 1 }\)

---

Definitions:

Ego

The part of the psyche that mediates between the conscious, the unconscious, and the external world, according to Freudian psychology.

Erogenous Zones

Areas of the body that are particularly sensitive to sexual stimulation.

Id's Pleasure-Seeking Energies

The component of the human psyche in Freudian psychology associated with instinctual urges and drives for immediate gratification.

Psychosexual Stages

The childhood stages of development (oral, anal, phallic, latency, genital) during which, according to Freud, the id’s pleasure-seeking energies focus on distinct erogenous zones.