The graph of a piecewise-defined function is given. Write a definition for the function. 
A.
f(x) = 
B. 
C. 
D. 
Answer: D
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Write an equivalent double integral with the order of integration reversed.
A. 
B. 
C. 
D. 
Find the directrices of the hyperbola.81y2 - 64x2 = 5184
A. x = ± 
B. y = ± 
C. y = ± 
D. y = ± 
Solve the system of equations. Determine whether the system is consistent or inconsistent. If the system is consistent, state whether the equations are dependent or independent.4x - y = 1012x - 3y = 30
A. {(x, y) 
}; consistent; dependent
B. (0, -10); consistent; independent
C. No solutions; inconsistent
D. (1, -6); consistent; independent
As part of a statistics project, a 6th grade teacher brings to class a container with 200 red marbles and 800 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 150 marbles from the container. Of the 150 marbles drawn, 33 are red.The N-value for this population is
A. 33. B. 1000. C. 200. D. 150. E. none of these