If n(S) = 10, n(R ? S) = 16, and n(R ? S) = 2, find n(R).
A. 6
B. 8
C. 4
D. 2
E. none of these
Answer: B
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Solve the system.x2 + 2xy + y2 = 9x2 + 2xy - y2 = -9
A. {(0, 3), (0, -3), (6, 3), (6, -3)} B. {(0, 3), (0, -3), (6, 3), (-6, -3)} C. {(0, 3), (0, -3), (-6, 3), (-6, -3)} D. {(0, 3), (0, -3), (-6, 3), (6, -3)}
Solve the given equation by finding the unknown value.232 + 114 = ?
A. 454 B. 346 C. 526 D. 643
Determine whether the relation represents a function. If it is a function, state the domain and range.{(-3, -6), (1, 3), (3, 0), (8, -1)}
A. function domain: {-6, 3, 0, -1} range: {-3, 1, 3, 8} B. function domain: {-3, 1, 3, 8} range: {-6, 3, 0, -1} C. not a function
Find the focus and directrix of the parabola with the given equation.4x2 = -3y
A. Focus: 
, directrix: y = 
B. Focus: 
, directrix: y = - 
C. Focus: 
, directrix: y = 
D. Focus: 
, directrix: x = 