Find the focus and the directrix of the parabola.(y - 4)2 = 8(x - 1)
A. Focus: (1, -4); directrix: x = -3
B. Focus: (-1, 4); directrix: x = 3
C. Focus: (3, 4) ; directrix: x = -1
D. Focus: (6, 1); directrix: x = 2
Answer: C
Mathematics
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x = 36
A. 
B. {2}
C. {-2}
D. 
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Find the sum of the arithmetic series using a formula.6 + 12 + 18 + ... + 396
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