Find the Common Ratio R for the Given Infinite Geometric $$3 , - 9,27 , - 81,243 , \ldots$$

question 173

Multiple Choice

Find the common ratio r for the given infinite geometric sequence.
- $$3 , - 9,27 , - 81,243 , \ldots$$

• A) 3
• B) \(- 12\)
• C) \(- \frac { 1 } { 3 }\)
• D) \(- 3\)

---

Definitions:

Average Variable Cost

The variable cost per unit of output.

Average Variable Cost

The variable costs associated with production, when divided by the number of units produced, indicate the cost per unit.

Marginal Cost

The cost of producing one additional unit of a good or service, an important concept in economics for determining the optimal level of production.

Average Total Cost

The total cost to produce a given quantity of output divided by the quantity of output produced; it includes all opportunity costs.