Use the Formula for the Sum of the First N $\sum _ { i = 1 } ^ { 25 } ( 2 i - 7 )$

question 37

Multiple Choice

Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
- $\sum _ { i = 1 } ^ { 25 } ( 2 i - 7 )$

• A) 587.5
• B) 475
• C) 675
• D) 450

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Definitions:

Postcentral Gyrus

A region of the cerebral cortex located immediately posterior to the central sulcus, responsible for processing somatosensory information.

Precentral Gyrus

The region of the cerebral cortex located in the frontal lobe, directly involved in controlling voluntary movements.

Prefrontal Gyrus

A portion of the frontal lobe in the brain, important for higher cognitive functions such as decision-making and social behavior.

Central Sulcus

A prominent landmark of the brain, separating the frontal lobe from the parietal lobe, playing a key role in dividing areas involved in motor and sensory functions.