Find a symbolic representation for f-1(x).f(x) = 
A. f-1(x) = x2 - 4, x ? 0
B. f-1(x) = (x + 4)2
C. Not a one-to-one function
D. f-1(x) =
Answer: A
Mathematics
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Find the center and radius of the circle and sketch its graph.(x + 5)2 + (y + 2)2 = 7
A. (h, k) = (-5, -2), r =
B. (h, k) = (-5, -2), r = 7
C. (h, k) = (-2, -5), r = 7
D. (h, k) = (-2, -5), r =
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Find the reciprocal of the number.-8
A. 8
B.
C. 0
D. -
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Use the given vectors to find the value of the indicated scalar.u = -2i + 7j, v = -7i + 5j; Find (-5u) ? v.
A. -35 B. -245 C. -15 D. 295
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Sketch the ellipse for the equation. +
= 1
A.
B.
C.
D.
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