Question

Select all representations for the domain of a function given by elevation (in feet) at or above sea level.
Responses:
(0, ∞)
(−∞, ∞ )
[0, ∞)
{x|x∈R}
{x|x>0}
{x|x≥0}

Answer 1

(0, ∞)
[0, ∞)
{x|x>0}
{x|x≥0}