Use the table for the question(s)below.
Consider the following covariances between securities: 
-What is the variance on a portfolio that has $3000 invested in Duke Energy,$4000 invested in Microsoft,and $3000 invested in Walmart stock?
Definitions:
Performance
The act of carrying out a task or function, often measured against pre-established standards such as speed, accuracy, or efficiency.
Audience
The person or group receiving a message.
Social Facilitation Theory
The theory that the presence of others increases a person’s dominant response—that is, the response that is most likely for that person for the task at hand.
Impair
To weaken or damage someone's abilities or functionality in a certain area, such as impairing one's judgment or physical capacities.
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