Find the Inverse Matrix of A $$A = \left[ \begin{array} { r r r r } 3 & - 2 & 0 & 2 \\9 & - 4 & 0 & 4 \\6 & - 8 & 0 & 6 \\0 & 0 & - 3 & 0\end{array} \right]$$

question 4

Multiple Choice

Find the inverse matrix of A.
- $$A = \left[ \begin{array} { r r r r } 3 & - 2 & 0 & 2 \\9 & - 4 & 0 & 4 \\6 & - 8 & 0 & 6 \\0 & 0 & - 3 & 0\end{array} \right]$$

• A)
• \[\left[ \begin{array} { c c c c }
• \frac { 1 } { 3 } & - \frac { 1 } { 2 } & 0 & \frac { 1 } { 2 } \\
• \frac { 1 } { 9 } & - \frac { 1 } { 4 } & 0 & \frac { 1 } { 4 } \\
• \frac { 1 } { 6 } & - \frac { 1 } { 8 } & 0 & \frac { 1 } { 6 } \\
• 0 & 0 & - \frac { 1 } { 3 } & 0
• \end{array} \right]\]
• B)
• \[\left[ \begin{array} { r r r r }
• - \frac { 2 } { 3 } & \frac { 5 } { 2 } & 0 & 4 \\
• \frac { 1 } { 3 } & - \frac { 1 } { 2 } & 0 & - 1 \\
• 0 & - \frac { 1 } { 2 } & 0 & - \frac { 1 } { 2 } \\
• 0 & 0 & - \frac { 1 } { 3 } & 0
• \end{array} \right]\]
• C)
• \[\left[ \begin{array} { r r r r }
• - \frac { 2 } { 3 } & \frac { 5 } { 2 } & 0 & 4 \\
• \frac { 1 } { 3 } & - \frac { 1 } { 2 } & - 1 & - 1 \\
• 0 & - \frac { 1 } { 2 } & 0 & - \frac { 1 } { 2 } \\
• 0 & 2 & - \frac { 1 } { 3 } & 0
• \end{array} \right]\]
• D)
• \(\left[\begin{array}{rrrr}
• -\frac{2}{3} & \frac{1}{3} & 0 & 0 \\
• \frac{5}{2} & -\frac{1}{2} & -\frac{1}{2} & 0 \\
• 0 & 0 & 0 & -\frac{1}{3} \\
• 4 & -1 & -\frac{1}{2} & 0
• \end{array}\right]\)

Understand the recording of sales transactions and the impact of sales discounts on financial statements.

Calculate income from operations and understand its components.

Distinguish between periodic and perpetual inventory systems and their impact on financial statements.

Calculate and understand the significance of gross profit in business operations.

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