Question

what is the domain of sqr, root 3x + 15

Answer 1

\[\sqrt{3x+15}\]

You know that has to be greater than or equal to 0 because square roots are always positive. You can solve an inequality the same way that you would solve any other equation, in this case, by isolating the X :)

Answer 2

\[\sqrt{3x+15 what is the domain}\]

Answer 3

so positve integer to infinity ?

Answer 4

I got \[x \ge -5\] because the expression under the radical sign needs to be positive. That's the only restriction :)