State the domain of the rational function.f(x) = 
A. (-?, 7) ? (7, ?)
B. (-?, -5) ? (-5, ?)
C. (-?, - 5) ? (- 5, 5) ? (5, ?)
D. (-?, ?)
Answer: C
Mathematics
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Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 1 B. 0 C. 2 D. No limit
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Make the indicated conversion. 80.1 mi2 to km2
A. 30.9 km2 B. 207 km2 C. 50.1 km2 D. 128 km2
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Reduce the fractions to lowest terms.
A. 
B. 
C. 
D. 
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Evaluate.
2 ? 
A. - 
B. - 
C. 
D. 
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