For the function, find the interval(s) for which f'(x) is positive.f(x) = x2 - 8x + 9
A. (4, ?)
B. (9, ?)
C. (8, ?)
D. (4.5, ?)
Answer: A
Mathematics
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A. (2, 0) B. (0, 0) C. (?2, 0) D. (0, ?2)
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Given a group of students: 
or 
count the different ways of choosing the following officers or representatives for student congress. Assume that no one can hold more than one office.A treasurer and a secretary if the two must not be the same sex
A. 10 B. 3 C. 12 D. 6
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Perform the indicated operation(s). Simplify if possible.
+ 
- 
A. 
B. 
C. 
D. 
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Find a decimal approximation of the root or power. Round the answer to the nearest thousandth.181/3
A. -18 B. 2.621 C. 5832 D. 324
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