A colony of bacteria has 10,000 bacteria and is growing exponentially. The inequality 10,000(4x) ≥ 320,000 represents the hours, x, for which the colony will have at least 320,000 bacteria.


Which interval represents the hours when the colony will have at least 320,000 bacteria?


[2.5, ∞)

[3, ∞)

[32, ∞)

[0, 2.5]

I have no clue what it is