Answer:
x≥ -3
Step-by-step explanation:
The domain is the values that x can take
g(x) = sqrt( x+3)
This must be greater than or equal to zero
x+3 must be greater than or equal to zero
x must be greater than or equal to -3
x≥ -3
a) a reflection over the y-axis
b) a reflection over y = x
c) a rotation of 90° about the origin
d) a reflection over the x-axis