Find a Matrix a and a Column Matrix B That $$\mathrm { AB } = \left[ \begin{array} { r } 1064 \\813 \\796\end{array} \right]$$

question 36

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) \[\mathrm { AB } = \left[ \begin{array} { r } 1064 \\ 813 \\ 796 \end{array} \right]\] Tuition for Student 1 is \(\$ 1064\), tuition for Student 2 is \(\$ 813\), and tuition for Student 3 is \(\$ 796\).
• B) \[\mathrm { AB } = \left[ \begin{array} { r } 1057 \\ 815 \\ 782 \end{array} \right]\] Tuition for Student 1 is \(\$ 1057\), tuition for Student 2 is \(\$ 815\), and tuition for Student 3 is \(\$ 782\).
• C) \[\mathrm { AB } = \left[ \begin{array} { l l l } 1074 & 799 & 804 \end{array} \right]\] Tuition for Student 1 is \(\$ 1074\), tuition for Student 2 is \(\$ 799\), and tuition for Student 3 is \(\$ 804\).
• D) \[\mathrm { AB } = \left[ \begin{array} { l l l } 1063 & 815 & 806 \end{array} \right]\] Tuition for Student 1 is \(\$ 1063\), tuition for Student 2 is \(\$ 815\), and tuition for Student 3 is \(\$ 806\).

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