Respuesta :

sunnday23

Answer:

D is the answer

Step-by-step explanation: Explanation:

The domain is the set of

x

-values that can be used to draw the function so,

You are unable to get a square-root of a negative number therefore the value under the square root must be

≥

0

.

Therefore we need all of the

x

-values that result in the value of

4

−

x

being

≥

0

.

4

−

x

≥

0

4

≥

x

x

≤

4

So all

x

-values

≤

4

will work in the equation. Now we right this in terms of all real numbers:

The Domain of

x

is all the real numbers expect when

x

>

4

(This produces a negative under the square root)

brainliest please

Space

Answer:

Option 4.

Step-by-step explanation:

We know if under the square root is a negative, then it will become an imaginary number i.

We see that in order to make the square root negative, we would have to have a number smaller than 4.

√(x - 4)

√(4 - 4) = √0 = 0

√(3 - 4) = √-1 = i

Therefore, in order for f(x) to be real numbers, x ≥ 4, [4, ∞), or {x | x ≥ 4}

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