Find the standard equation of the parabola that satisfies the given conditions. Vertex: (-3, 4); directrix: x = -5
A. (x + 3)2 = -8(x - 4)
B. (y - 4)2 = 8(x + 3)
C. (x - 4)2 = 8(y + 3)
D. (y - 4)2 = -8(x + 3)
Answer: B
Mathematics
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A. 
B. 
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A. 18 B. -8 C. 8 D. -18
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Solve the problem.Every hour, the population of a certain country increases by about 6192. If this country's death rate is 2037 deaths per hour, what is this country's (hourly) birth rate?
A. 5074 births per hour B. 7731 births per hour C. 8229 births per hour D. 4155 births per hour
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Check to see if the given number is a solution for the equation.-2(x + 10) + 4x = 4(x - 10) + 2; check x = 9
A. 9 is not a solution. B. 9 is a solution.
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