Write Out the First Three Terms and the Last Term $$\sum _ { i = 1 } ^ { 70 } - 2 i$$

question 31

Multiple Choice

Write out the first three terms and the last term of the arithmetic sequence.
- $$\sum _ { i = 1 } ^ { 70 } - 2 i$$

• A) \(- 2 + 4 - 12 + \ldots - 280\)
• B) \(- 1 - 2 - 4 - \ldots - 140\)
• C) \(- 2 - 4 - 8 - \ldots - 280\)
• D) \(- 2 - 4 - 6 - \ldots - 140\)

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Definitions:

Comparative Advantage

The ability of an individual or country to produce a good or service at a lower opportunity cost than others, leading to more efficient international trade.

Opportunity Cost

The cost of foregoing the next best alternative when making a decision.

Domestic Opportunity Cost

The cost of forgoing the next best alternative use of a country's own resources.