Express the Sum Using Summation Notation $$a + a r + a r ^ { 2 } + \ldots + a r ^ { 13 }$$

question 63

Multiple Choice

Express the sum using summation notation. Use a lower limit of summation, not necessarily 1, and k for the index of
summation.
- $$a + a r + a r ^ { 2 } + \ldots + a r ^ { 13 }$$

• A) \(\sum _ { \mathrm { k } = 1 } ^ { 14 } a r ^ { \mathrm { k } }\)
• B) \(\sum _ { k = 0 } ^ { 13 } ( a r ) ^ { k }\)
• C) \(\sum _ { k = 0 } ^ { 13 } a r ^ { k }\)
• D) \(\sum _ { k = 1 } ^ { 13 } a r ^ { k }\)

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Definitions:

Week

A period of seven consecutive days, commonly considered as starting on Sunday and ending on Saturday.

Dimensional-analysis

A technique in chemistry and physics used to convert one unit of measurement to another, utilizing the fact that the dimensions of the original and converted measurement must be the same.

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