Solve the Problem $$\left\{ \begin{array} { l } x = - y \\x + y = 6\end{array} \right.$$

question 87

Multiple Choice

Solve the problem.
- $$\left\{ \begin{array} { l } x = - y \\x + y = 6\end{array} \right.$$

• A) \(\{ ( 1,5 ) \}\)
• B) no solution; \(\varnothing\)
• C) infinitely many solutions; \(\{ ( x , y ) \mid x + y = 6 \}\) or \(\{ ( x , y ) \mid x = - y \}\)
• D) \(\{ ( 1,1 ) \}\)

Identify and exemplify unethical competitive behaviors in business.

Explain the concept of cause marketing and its impact on consumer behavior.

Evaluate the ethics and social responsibility of marketing practices.

Understand different measures for evaluating portfolio performance.

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