Use the Formula for the Sum of the First N $$\sum _ { \mathrm { i } = 1 } ^ { 27 } ( 2 \mathrm { i } - 5 )$$

question 114

Multiple Choice

Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
- $$\sum _ { \mathrm { i } = 1 } ^ { 27 } ( 2 \mathrm { i } - 5 )$$

• A) 621
• B) 594
• C) 729
• D) \(823.5\)

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Definitions:

Biceps Brachii

A large muscle in the upper arm that turns the hand to face palm up and flexes the arm and forearm.

Brachialis

A muscle in the upper arm that flexes the elbow, located underneath the biceps.

Triceps Brachii

A major muscle of the upper arm responsible for extension of the elbow.

Anterior Cervical Triangle

An anatomical region of the neck bounded by the sternocleidomastoid muscle, the mandible, and the midline of the neck.