Solve the problem or provide an explanation.Graph y = x2 - 4x + 8 and f(x) = 
together on your graphing calculator. State the domain of f(x) and explain the connection between the domain of f(x) and the graph of 
A. The domain of f(x) is (-?, -1] ? [6, ?). The domain of f(x) is the set of all x-values for which the graph of 
is on or below the x-axis.
B. The domain of f(x) is ?. There is no connection between the domain of f(x) and the graph of y = x2 - 4x + 8.
C. The domain of f(x) is (-?, ?). The domain of f(x) is the set of all x-values for which the graph of 
is on or above the x-axis.
D. The domain of f(x) is (-1, ?). The domain of f(x) is the same as the domain of y = x2 - 4x + 8.
Answer: C
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Rationalize the denominator.
A. 2
- 11
B. 11 - 2
C. -11 - 2
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