The function f is one-to-one. Find its inverse.f(x) = 2x
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = -2x
D. f-1(x) = 2x
Answer: B
Mathematics
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Determine whether the sequence converges or diverges, and, if it converges, find 
an.an = 
A. 1 B. e20 C. 0 D. Diverges
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Divide.-2.5 ÷ 0.05
A. 
B. -2.45
C. -24.5
D. -50
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Let f(x) = 8x2 - 5x and g(x) = 7x + 9. Find the composite.g[f(-k)]
A. 56k2 - 35k + 9 B. 392k2 + 973k + 603 C. 56k2 + 35k + 9 D. 392k2 - 973k + 603
Mathematics
Polar coordinates of a point are given. Find the rectangular coordinates of the point.(-3, 120°)
A. 
B. 
C. 
D. 
Mathematics