Find the domain of the rational expression.
A. {x|x is a real number and x ? 7}
B. {x|x is a real number}
C. {x|x is a real number and x ? 3}
D. {x|x is a real number and x ? 3 and x ? 7}
Answer: B
Mathematics
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A. 
B. - 
C. - 
D. 
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Perform the indicated operation. Simplify if possible.
- 
A. 
B. 
C. 
D. 
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Find the expected value of the probability density function to the nearest hundredth.f(x) = 1 - 
; [1, 4]
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