Answer :
I think you mean
[tex]f(t)=\sqrt{3t-9}[/tex]
so therefor since we can't take squaer root of negative
3t-9 must not be negative
basicaly, 3t-9 must be greater than or equal to 0
[tex]f(t)=\sqrt{3t-9}[/tex]
so therefor since we can't take squaer root of negative
3t-9 must not be negative
basicaly, 3t-9 must be greater than or equal to 0
Greater than or equal to
I hope this helps, and God bless <3