If f of x is equal to square root of 1 half x minus 10 end root plus 3 , which inequality can be used to find the domain of f of x ?

For a square root to be a real number, the expression inside the radical must be greater than or equal to 0. Here the radicand is one-half x minus 10, so the domain is found by solving one-half x minus 10 ≥ 0. The inequality is choice D: 1/2 x − 10 ≥ 0.

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