The range of which function includes - 4?

O y = √x-5

O y = √x+5

O y = √x+5

O y=√x-5

Answer: A is the correct answer.

Start with the last two choices.

You have x + 5 and * - 5 in the square root.

A square root can never be negative.

That means that the lowest value of y can have in the last two choices is 0.

Now range doesn't include - 4.

Now look at choice B.

sqrt (x) is at least 0.

Then you add 5.

The range doesn't include - 4.

Now look at choice A.

sqrt (x) is at lest 0.

Now, you subract 5.

The lowest value y can have is - 5. That includes - 4.

Choice A is the answer.

y will be at least 5

Hope it works out!