Evaluate the Sum $$\sum _ { \mathrm { k } = 1 } ^ { 4 } ( - 1 ) ^ { \mathrm { k } } ( \mathrm { k } + 2 )$$

question 107

Multiple Choice

Evaluate the sum. Round to two decimal places, if necessary.
- $$\sum _ { \mathrm { k } = 1 } ^ { 4 } ( - 1 ) ^ { \mathrm { k } } ( \mathrm { k } + 2 )$$

• A) 2
• B) \(- 18\)
• C) 10
• D) 18

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Definitions:

Lubrication

The process or technique of reducing friction between surfaces in contact by introducing a lubricant, such as oil or grease.

Contact Lenses

Corrective, therapeutic, or cosmetic lenses placed on the cornea of the eye to correct vision or for aesthetic purposes.

Rigid Gas-permeable

A type of hard contact lens that allows gas exchange through the material, providing clear vision and comfort.

Soft Contact Lenses

Flexible lenses placed on the surface of the eye to correct vision, more comfortable than rigid lenses.