Solve the System by the Method of Your Choice $$\begin{array} { l } 3 x + y = 8 \\9 x + 3 y = 24\end{array}$$

question 57

Multiple Choice

Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.
- $$\begin{array} { l } 3 x + y = 8 \\9 x + 3 y = 24\end{array}$$
$$9 \mathrm { x } + 3 \mathrm { y } = 24$$

• A) \(\{ ( 5 , - 7 ) \}\)
• B) \(\{ ( 0,8 ) \}\)
• C) \(\{ ( x , y ) \mid 3 x + y = 8 \}\)
• D) \(\varnothing\)

Identify and describe the mechanisms of electrophilic aromatic substitution reactions.

Recognize how substituents on the aromatic ring influence the reactivity and orientation in electrophilic aromatic substitution.

Predict the major products of electrophilic aromatic substitution reactions involving various substituents.

Understand the role of catalysts and reaction conditions in electrophilic aromatic substitution reactions.

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Id

In psychoanalytic theory, a part of the mind that is the source of instinctual impulses and demands for immediate satisfaction of basic needs.