In which one of the following intervals is the function f(x) = x2 – 5x + 6 decreasing?

In which one of the following intervals is the function f(x) = x2 –

1.	In which one of the following intervals is the function f(x) = x2 – 5x + 6 decreasing?
A.	(-∞, 2.5)
B.	(3, ∞)
C.	(-∞,∞)
D.	(2, 3)
Answer» B. (3, ∞)

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In which one of the following intervals is the function f(x) = x2 – 5x + 6 decreasing?

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