Help w/pre-calculus!!?

Question

what is the domain and range (in interval notation) of f(x)= √( x+2)

Answer 1

The function f(x) = √(x + 2) .

The domain of a function is for all values of x greater than or equals to - 2, makes the function mathematically correct.

Since there shouldn't be any negative numbers in the square root.

So, the domain of the function is { x | x ≥ - 2}.

The domain in interval notation is [ - 2, + ∞ ).

Range set is the corresponding values of the function for different values of x.

Since for for all values of x greater than or equals to - 2, the function is

So, the range of the function is always greater than or equal to .

The range in interval notation is [ 0, + ∞ ).