Use the table for the question(s)below.
Consider the following covariances between securities: 
-What is the variance on a portfolio that has $2000 invested in Duke Energy,$3000 invested in Microsoft,and $5000 invested in Wal-Mart stock?
Definitions:
Return on Equity
A financial ratio that measures the profitability of a company in relation to shareholders' equity, indicating how effectively equity supports operations and growth.
Earnings Per Share
A measure of a company's profitability calculated by dividing its net income by the number of outstanding shares of its common stock.
Net Profit Margin Ratio
A profitability ratio calculated by dividing net income by net sales, showing how much profit a company makes for every dollar of its sales.
Gross Sales Revenue
the total amount of sales generated by a business before any deductions are made.
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