Find the foci of the ellipse.4x2 + y2 - 72x + 320 = 0
A. (2, 4
), (2, -4
)
B. (9, 
), (9, -
)
C. (9 + 
, 0), (9 -
, 0)
D. (9, 2), (9, -2)
Answer: B
Mathematics
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Without graphing, tell whether the graphs of the pair of equations are parallel, perpendicular, or neither. 6x + 2y = 815x + 5y = 22
A. Parallel B. Perpendicular C. Neither
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Determine whether the ordered pair is a solution of the given equation.(-2, -1)2x + 4y = -8
A. No B. Yes
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Find the least common multiple (LCM) of the list of numbers.9, 14
A. 126 B. 9 C. 23 D. 14
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The function f is one-to-one. Find its inverse.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
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