Rewrite the Series as an Equivalent Series with the New $$\sum _ { i = 1 } ^ { 7 } ( 9 i ) = \sum _ { k = 3 } ^ { ? } ( ? )$$

question 243

Multiple Choice

Rewrite the series as an equivalent series with the new index of summation.
- $$\sum _ { i = 1 } ^ { 7 } ( 9 i ) = \sum _ { k = 3 } ^ { ? } ( ? )$$

• A) \(\sum _ { k = 3 } ^ { 9 } [ 9 ( k - 2 ) ]\)
• B) \(\sum _ { k = 3 } ^ { 9 } [ 9 ( k + 2 ) ]\)
• C) \(\sum _ { k = 3 } ^ { 9 } [ 9 ( k - 3 ) ]\)
• D) \(\sum _ { k = 3 } ^ { 9 } [ 9 ( k + 3 ) ]\)

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