Answer:
The first, the fourth, the fifth and the last
Step-by-step explanation:
We have imaginary values for Y when the radical is negative
The first
if you eval x=7, you will have sqrt(-1) which results in an imaginary value
The fourth
If you eval the greatest value that x can have, which could be 5, you still have a negative value.
for instance x=-2, which belongs to the range
The fifth
Every value you choose for x results in a negative value inside your root.
for instance x=-2, which belongs to the range
The last
Every value you choose for x results in a negative value inside your root, eval for instance x=-2, which belongs to the range
