Which function has the domain x is greater than or equal to negative 11 ?

For a square root to be real, the expression inside it must be at least 0. In choice A, x + 11 ≥ 0, so x ≥ −11; the +5 outside the square root does not affect the domain. Therefore, the function with domain x ≥ −11 is y = √(x + 11) + 5.

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