Determine whether the given function is one-to-one. If it is one-to-one, find its inverse function.f(x) = x2 + 4, x ? 0
A. one-to-one function; f-1(x) = 
, x ? -4
B. one-to-one function; f-1(x) = 
- 4, x ? 0
C. one-to-one function; f-1(x) = 
, x ? 4
D. not a one-to-one function
Answer: C
Mathematics
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A. 
5
B. 
6
C. 63/4
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