Find a Formula for A_n ​for the Arithmetic Sequence

question 18

Multiple Choice

Find a formula for a_n ​for the arithmetic sequence. ​
16,11,6,1,-4,...
​

• A)a_n ​= 1 - 5n
• B)a_n ​= 1 + 5n
• C)a_n ​= -5n + ​21
• D)a_n ​= 5n - 21
• E)a_n ​= 5n + 21

---

Definitions:

Average Age

The mean age of a group of individuals, calculated by adding their ages together and dividing by the total number of individuals.

Voluntary Response Sampling

A sampling method in which participants self-select to be part of a survey or study, often leading to biased results due to non-random participation.

College Newspaper

A publication produced by students of a college or university, covering campus news and events, and often including opinion pieces, features, and entertainment.

Cafeteria Food

Cafeteria food refers to the meals and snacks provided in a cafeteria setting, typically found in schools, hospitals, and workplaces, characterized by a variety of pre-prepared options.