Respuesta :

bcalle
f(x) = sqrt ( 1/3 x + 2)
To find the domain set the radicand equal to zero and solve.
1/3 x + 2 = 0
Subtract 2 from both sides
1/3 x = - 2
Multiply both sides by 3
x = -6
We know that the radicand must be positive so
x > = -6
The last option