Solve the problem.Find the vertices and foci of the following hyperbola:
- 
= 1
A. Vertices: (0, 2), (0, -2); Foci: (0, 11), (0, -11)
B. Vertices: (2, 0), (-2, 0); Foci: (11, 0), (-11, 0)
C. Vertices: (0, 11), (0, -11); Foci: (0, 2), (0, -2)
D. Vertices: (4, 0), (-4, 0); Foci: (11, 0), (-11, 0)
Answer: B
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A. (-9, 0) ? (0, 9) B. (-?, -9) ? (0, 9) C. (-?, -9) ? (9, ?) D. (-9, 0) ? (9, ?)
Find the domain of the vector-valued function.r(t) = ln (t - 1)i + 
j
A. {t ? ?: 1 < t ? 4} B. {t ? ?: 1 < t < 4} C. {t ? ?: t ? 4} D. {t ? ?: t > 1}
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- (hours of drinking × 0.015).For example, the BAC for a 150-lb man who in two hours has drunk two 12-ounce beers , each having a 3.3 percent alcohol content isBAC = 
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A. 0.067 B. 0.078 C. 0.054 D. 0.056
Determine the natural logarithm of the number. Round to the nearest ten-thousandth.15,800,000
A. 0.0601 B. 7.1987 C. 16.5755 D. 5.0626