Determine the Values of C Such That $\| c u \| = 9$

question 211

Multiple Choice

Determine the values of c such that $\| c u \| = 9$ ,where $\mathbf { u } = \mathbf { i } + 8 \mathbf { j } + 9 \mathbf { k }$ .

• A) \(\pm 10 \sqrt { 146 }\)
• B) \(\frac { 9 } { 146 }\)
• C) \(\pm \frac { 10 \sqrt { 146 } } { 146 }\)
• D) \(- \frac { 9 } { 146 }\)
• E) \(\pm \frac { 9 \sqrt { 146 } } { 146 }\)

---

Definitions:

Cap-And-Trade

An environmental policy tool that sets a limit on emissions and allows companies to trade allowances for emissions as a way to reduce pollutants.

Pollutant Permits

Government-issued licenses allowing the holder to emit a certain amount of pollution; they can be bought and sold, creating an economic incentive for reducing emissions.

Consumer Surplus

The difference between the total amount that consumers are willing and able to pay for a good or service versus the total amount that they actually do pay.

Demand Curve

A graph showing the relationship between the price of a good or service and the quantity demanded by consumers, typically downward sloping.