Find n(A) for the set.A = {x : x is a second in a minute}
A. n(A) = 120
B. n(A) = Infinite
C. n(A) = 60
D. n(A) = 12
Answer: C
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Solve the problem. Round results to an appropriate number of significant digits.A fire is sighted due west of lookout A. The bearing of the fire from lookout B, 
due south of A, is 
How far is the fire from B (to the nearest tenth of a mile)?
A. 20.9 mi B. 18.9 mi C. 21.9 mi D. 19.9 mi
Solve the problem.Consider the region R bounded by the graph of f(x) = 
on the interval [0, 3]. Find the volume of the solid formed when R is revolved about the x-axis.
A. 
B. 
+ 6
C. 
D. 
Find the indicated set given A = {-3, 0, 2, 5, 6, 11, 16, 23}, B = {-3, 0, 16, 23}, and 
B ? C
A. {11, 16, 23} B. {16, 23} C. {-7, -4, -3, 0, 11, 16, 23} D. {-4, 16, 23}
Find the eccentricity of the ellipse.Find the eccentricity of an ellipse centered at the origin having a focus of (0, 
) and corresponding directrix y = 
A. 
B. 
C. 
D. 