Find an equation of a parabola that satisfies the given conditions.Vertex (6, -7), focus (6, -2)
A. x + 6 = 20(y + 7)2
B. 20(y - 7) = (x + 6)2
C. 20(y + 7) = (x - 6)2
D. y + 7 = 20(x + 6)2
Answer: C
Mathematics
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Find the arc length parameter along the curve from the point where t = 0 by evaluating 
r(t) = (etcos t)i + (etsin t)j + 5etk
A. 3
et - 
B. 
et - 
C. 
et - 3
D. 3
tet - 3
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Simplify.
4
A. 
B. 
C. 
D. 
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Graph the solution of the system.x - 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
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Find the x-intercept and the y-intercept of the graph of the equation. Do not graph the equation.3x - 2y = 7
A. x-intercept = 
; y-intercept = 
B. x-intercept = 4; y-intercept = 9
C. x-intercept = - 
; y-intercept = 
D. x-intercept = 
; y-intercept = - 
Mathematics