Find the Inverse of the Matrix $$\left[ \begin{array} { c c } 3 & 6 \\- 9 & - 15\end{array} \right]$$

question 21

Multiple Choice

Find the inverse of the matrix $$\left[ \begin{array} { c c } 3 & 6 \\- 9 & - 15\end{array} \right]$$ .

• A)​ \[\frac { 1 } { 7 } \left[ \begin{array} { c c }
• 3 & 6 \\
• - 9 & - 15
• \end{array} \right]\]
• B)​ \[\frac { 1 } { 3 } \left[ \begin{array} { c c }
• - 5 & - 2 \\
• 3 & 1
• \end{array} \right]\]
• C)​ \[\left[ \begin{array} { c c }
• - 3 & - 6 \\
• 15 & 9
• \end{array} \right]\]
• D)​ \[\left[ \begin{array} { c c }
• 3 & - 9 \\
• 12 & - 21
• \end{array} \right]\]
• E)​ \[\frac { 1 } { 13 } \left[ \begin{array} { l l }
• - 3 & - 6 \\
• - 9 & 15
• \end{array} \right]\]

Understand marketing strategies for targeting specific age groups.

Recognize the impact of age on consumer identity and its relevance in marketing.

Understand the concept of age cohorts and their relevance in market segmentation.

Identify the unique characteristics and marketing considerations for each major age cohort including baby boomers, seniors, and teens.

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