Question

Determine the domain of the function. f as a function of x is equal to the square root of seven plus x.

x ≥ 0
All real numbers
x ≥ -7
x > 0

Answer 1

The third one. x is greater than it or equals to -7

Answer 2

Option C, x ≥ -7

Explanation:

The given function is f(x) =
`√(7+x)`

Then we have to find the domain of the given function

The given function is defined only when ( x+7 ) ≥ 0

or ( x + 7 ) - 7 ≥ 0 - 7

x ≥ ( -7 )

Therefore, domain of the function will be x ≥ -7

Option C is the answer.