Write the Expression for the General (Or Nth)termrm $\mathbf { a } _ { \mathbf { n } } ,$

question 128

Multiple Choice

Write the expression for the general (or nth) termrm, $\mathbf { a } _ { \mathbf { n } } ,$ , of the geometric sequence.
-5, 10, 20, 40, 80,. . .

• A) \(a _ { n } = 5 ( 2 ) ^ { n - 1 }\)
• B) \(a _ { n } = 5 ( 2 n )\)
• C) \(a _ { n } = a _ { 1 } + 2 ^ { n }\)
• D) \(a _ { n } = 5 ( 2 ) ^ { n }\)

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Definitions:

Social Psychology

The scientific study of how individuals think, feel, and behave in the context of social interactions and how they are influenced by the actual or implied presence of others.

Scientific Method

A systematic and logical approach to discovering how things in the universe work, involving observation, hypothesis formulation, experimentation, and conclusion.

Margin of Error

A statistic expressing the amount of random sampling error in a survey's results, indicating how much the survey results may deviate from the actual population values.

Construct Validity

The degree to which a test measures what it claims to measure, reflecting the accuracy of the concept being evaluated.