Sketch the level curve z = k for the indicated values of k.z = 
, k = -4, -1, 0, 1, 4
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the eccentricity of the ellipse.Find the eccentricity of an ellipse centered at the origin having a focus of 
and corresponding directrix 
A. 
B. 
C. 
D. 
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Solve.An auditorium has 20 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium?
A. 580 B. 400 C. 390 D. 620
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Solve the equation.logz(9) = 
A. 
B. 729
C. 
D. 19,683
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Determine whether the function is one-to-one by graphing and using the horizontal line test.f(x) = 
A. Yes B. No
Mathematics