Find the Inverse of the Matrix $$\left[ \begin{array} { l l l } 1 & 0 & 8 \\1 & 2 & 3 \\2 & 5 & 3\end{array} \right]$$

question 159

Multiple Choice

Find the inverse of the matrix.
- $$\left[ \begin{array} { l l l } 1 & 0 & 8 \\1 & 2 & 3 \\2 & 5 & 3\end{array} \right]$$

• A) \(\left[ \begin{array} { r r r } 9 & - 40 & 16 \\ - 3 & 13 & - 5 \\ - 1 & 5 & - 2 \end{array} \right]\)
• B) \(\left[ \begin{array} { r r r } - 1 & 0 & - 8 \\ - 1 & - 2 & - 3 \\ - 2 & - 5 & - 3 \end{array} \right]\)
• C) \(\left[ \begin{array} { l l l } 1 & 1 & 2 \\ 0 & 2 & 5 \\ 8 & 3 & 3 \end{array} \right]\)
• D) No inverse

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Definitions:

Fixed Cost Per Unit

The fixed costs of production (expenses that do not change with the level of output) divided by the number of units produced.

Relevant Range

The range of activity or volume over which the assumptions about variable and fixed costs are valid for budgeting and planning purposes.

Direct Manufacturing Cost

The sum of all direct costs associated with the production of goods, including labor and materials.

Relevant Range

The span of operations where the presuppositions regarding variable and fixed cost dynamics remain applicable.