Find the Sum of the Finite Geometric Sequence $\sum _ { n = 1 } ^ { 7 } 2 ^ { n - 1 }$

question 28

Multiple Choice

Find the sum of the finite geometric sequence. $\sum _ { n = 1 } ^ { 7 } 2 ^ { n - 1 }$

• A)43
• B)22
• C)127
• D)63
• E)31

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Definitions:

Overview

A summary or brief presentation of the main points or features of a subject or written work.

Place Theory

A theory in hearing that suggests different areas of the cochlea are activated by different frequencies of sound.

Frequency Theory

A theory in the study of hearing which suggests that the perception of pitch depends on the rate at which auditory nerve fibers are stimulated by the sound wave.

Pitch Perception

The aspect of hearing that allows the differentiation of sounds based on the frequency of their vibrations, discerning high sounds from low sounds.