Select all representations for the domain of a function given by elevation (in feet) at or above sea level.

Question

{x|x∈R}
start set x such that x is in the real numbers end set

{x|x≥0}
start set x such that x is greater than or equal to 0 end set

[0, ∞)
[0, ∞)

{x|x>0}
start set x such that x is greater than 0 end set

(0, ∞)
(0, ∞)

(−∞, ∞)

Answer 1

(−∞, ∞)