Find the foci of the hyperbola.
- 
= 1
A. (0, -6) and (0, 6)
B. (- 6
, 0) and (6
, 0)
C. (0, - 6
) and (0, 6
)
D. (-12, 0) and (12, 0)
Answer: B
Mathematics
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Solve the problem.A drug is injected into a patient and the concentration of the drug is monitored. The drug's concentration, 
in milligrams after t hours is modeled by 
Estimate the drug's concentration after 5 hours. (Round to the nearest hundredth.)
A. 0.71 milligrams B. 3.27 milligrams C. 0.77 milligrams D. 3.33 milligrams
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Solve the equation. Express radicals in simplest form.n2 = -289
A. {-17} B. {17} C. {-17, 17} D. ?
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Simplify.r-3
A. -r3
B. 
C. - 
D. r1/3
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Differentiate.y = 
A. 
= 
B. 
= 
C. 
= 
D. 
= 
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