For the functions f(x) and g(x), determine the domain of (f ? g)(x) (the product of f and g).f(x) = 
, g(x) = 
A. {x ? x is a real number and x ? -3 and x ? -11}
B. {x ? x is a real number}
C. {x ? x is a real number and x ? 3 and x ? 11}
D. {x ? x is a real number and x ? 3}
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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represents the population of a bacterium in a culture tube after t hours. What was the initial amount of bacteria in the population?
A. 30 B. 35 C. 29 D. 31
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A tunnel is in the shape of a parabola. The maximum height is 16 m and it is 16 m wide at the base. What is the vertical clearance 7 m from the edge of the tunnel?
A. 15.7 m B. 0.3 m C. 0.6 m D. 15.4 m
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