Applying the Concepts

49. ${(- 1, 2)}$ ${(- 1, 2)}$
51. ${(2, - 1, 3)}$ ${(2, - 1, 3)}$
53. ${(- 5, 1, 5)}$ ${(- 5, 1, 5)}$
55. Treasury: $16,000; bonds: $48,000; fund: $26,000
57. $V = 10, E = 15, R = 7$ $V = 10, E = 15, R = 7$
59. $X = [\begin{array}{r} 100 \\ 100 \end{array}]$ $X = [\begin{array}{r} 100 \\ 100 \end{array}]$
61. $X = [\begin{array}{l} \frac{216, 000}{277} \\ \frac{310, 000}{277} \\ \frac{304, 000}{277} \end{array}]$ $X = [\begin{array}{l} \frac{216, 000}{277} \\ \frac{310, 000}{277} \\ \frac{304, 000}{277} \end{array}]$

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Table of Contents for Applying the Concepts