Use exponential notation to write the repeated multiplication.9 ? 7 ? 7 ? 7 ? 7 ? 7

A. 19 ? 57
B. 9 ? 75
C. (9 ? 7)5
D. 635

Answer: B

Mathematics

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Solve the system of linear equations using the elimination method.

A. (10, 6, -5) B. (5, 6, 2) C. (5, 2, 6) D. (-5, 6, 10)

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Solve the problem.The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by where x is the number of videos rented daily. Find the lowest cost to the nearest dollar.

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Consider the following null and alternative hypotheses. Ho: ? = 67 Ha: ? ? 67 These hypotheses:

Question 2 options:

1)	indicate a one-tailed test with a rejection area in the right tail

2)	indicate a one-tailed test with a rejection area in the left tail

3)	indicate a two-tailed test

4)	are established incorrectly

5)	are not mutually exclusive

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A. $2872.80 B. $2872.9 C. $2872.91 D. $2872.7

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