Find the specified domain.For f(x) = 2x - 5 and g(x) = 
, what is the domain of (f + g)?
A. [-10, ?)
B. [0, ?)
C. [10, ?)
D. (-10, 10)
Answer: A
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For the smooth curve r(t), find the parametric equations for the line that is tangent to r at the given parameter value 
r(t) = (4t2 - 4t)i + (t + 9)j + k ; t0 = 2
A. x = 8 + 12t, y = 11 + t, z = 1 B. x = 8 + 12t, y = 11 + t, z = 0 C. x = 12t, y = t, z = t D. x = 8 + t, y = t, z = t
Translate the phrase to an algebraic expression.Seven divided by x
A. 7 - x
B. 7 + x
C. 7x
D. 
Find the vertex, the focus, and the directrix of the parabola.(x - 1)2 = 12(y - 3)
A. V: (-1, -3); F: (-1, 0); D: y = -6 B. V: (1, 3); F: (1, 6); D: y = 0 C. V: (3, 1); F: (3, 4); D: y = -2 D. V: (1, 3); F: (1, 0); D: x = 6
Determine whether the pair of lines is parallel, perpendicular, or neither. 4x - 4y = 7 12x + 6y = 7
A. Parallel B. Perpendicular C. Neither