The domain and range of the function f given by f(x)=2−x−5 is

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Domain = R+, Range = (−∞, 1]

Domain = R, Range = (−∞, 2]

Domain = R, Range = (−∞, 2)

Domain = R+, Range = (−∞, 2]

answer is B.

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Detailed Solution

|x| defines for any valuex-5≥0⇒-x-5≤0⇒2-x-5≤2 range is (-∞,2]

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