Find a Matrix a and a Column Matrix B That $$\mathrm { AB } = \left[ \begin{array} { r } 960 \\810 \\1011\end{array} \right]$$

question 247

Multiple Choice

Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the
matrix product AB, and interpret the significance of the entries of this product.
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• A) \[\mathrm { AB } = \left[ \begin{array} { r } 960 \\ 810 \\ 1011 \end{array} \right]\] Tuition for Student 1 is \(\$ 960\), tuition for Student 2 is \(\$ 810\), and tuition for Student 3 is \(\$ 1011\).
• B) \(\mathrm { AB } = [ 63 ]\) The average cost per credit hour is \(\$ 63\).
• C) \[\mathrm { AB } = \left[ \begin{array} { r } 1074 \\ 981 \\ 726 \end{array} \right]\] Tuition for Student 1 is \(\$ 1074\), tuition for Student 2 is \(\$ 981\), and tuition for Student 3 is \(\$ 726\).
• D) \[\mathrm { AB } = \left[ \begin{array} { r } 789 \\ 1095 \\ 897 \end{array} \right]\] Tuition for Student 1 is \(\$ 789\), tuition for Student 2 is \(\$ 1095\), and tuition for Student 3 is \(\$ 897\).

Grasp the processes undertaken during the writing phase of business messages.

Identify specific and general purposes of business communications.

Understand the importance of setting realistic goals for business messages.

Properly allocate time among planning, writing, and completing stages of the writing process.

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Definitions:

Bituminous Coal

A type of coal characterized by its high carbon content and heating value, commonly used for electricity generation.

Sedimentary

Relating to rocks formed by the accumulation and consolidation of mineral and organic particles deposited by water, ice, or air.

Lignite

A soft brownish coal showing traces of plant structure, intermediate between bituminous coal and peat.

Sulfuric Acid

A highly corrosive strong mineral acid with molecular formula H2SO4, widely used in industry.