Find the Sum of the Sequence $$\sum _ { k = 4 } ^ { 7 } 6 k$$

question 141

Multiple Choice

Find the sum of the sequence.
- $$\sum _ { k = 4 } ^ { 7 } 6 k$$

• A) 132
• B) 90
• C) 42
• D) 66

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Definitions:

Surface

The outermost or uppermost layer of something, often referring to land, a body of water, or a solid object.

Partially Decomposed

Refers to materials that have begun the process of decay and breakdown by bacteria, fungi, and other organisms, but have not yet fully decomposed.

Organic Debris

Organic Debris constitutes organic materials like leaves, twigs, and animal remains that accumulate in natural environments, contributing to soil formation and nutrient cycling.

Surface Litter

The layer of dead plant and animal material found on the ground or floating on the surface of water bodies, contributing to nutrient cycling.