Use a graphing calculator to solve the system by finding  A-1 and  A-1B. (Round to the nearest integer if necessary.)

A. {(3, 7, 8)}
B. {(2, -9, -8)}
C. {(9, 8, 9)}
D. {(2, 9, 8)}


Answer: D

Mathematics

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A. (-2, -1) B. (2, -1) C. (-1, -2) D. (-1, 2)

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Solve the problem with estimation, but do not use a calculator. Use rounding to make the resulting calculations simple.If a person earns $29.55 per hour, estimate that person's annual salary.

A. $40,000 B. $50,000 C. $60,000 D. $70,000

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Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to three decimal places. log8.65.9

A. 0.686 B. 1.212 C. 0.771 D. 0.825

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Simplify using the product rule.6

A. 12 B. 24 C. 10 D. 48

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