Simplify the Radical Expression $9 \sqrt { 7 } - 3 \sqrt { 7 }$

question 108

Multiple Choice

Simplify the radical expression. Assume all variables represent positive real numbers.
- $9 \sqrt { 7 } - 3 \sqrt { 7 }$

• A) \(6 \sqrt { 7 }\)
• B) \(6 \sqrt { 14 }\)
• C) \(- 27 \sqrt { 14 }\)
• D) \(12 \sqrt { 7 }\)

---

Definitions:

Budget Line

A graphical representation showing all possible combinations of two goods or services that a consumer can afford with their income, given the prices of the goods.

Indifference Curve

A graph showing different bundles of goods between which a consumer is indifferent, indicating the same level of satisfaction.

Marginal Utility

The extra pleasure or benefit obtained from the consumption of an additional unit of a product or service.

Money Income

refers to the total income received by an individual or household in monetary form, including wages, salaries, benefits, and investment income.