Use the Formula for the Sum of the First N $\sum _ { i = 1 } ^ { 25 } ( - 5 i - 3 )$

question 41

Multiple Choice

Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
- $\sum _ { i = 1 } ^ { 25 } ( - 5 i - 3 )$

• A) -1700
• B) -1525
• C) -1612.5
• D) -1637.5

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