Answer:
1. G
2. F
3. B
4. F
Explanation:
1. There is no restriction on x-values (sqrt or n/0 form). so it can take all real values.
2. Let y=f(x)
On expressing x in terms of y, we obtain:

Now, the expression in the root ( 2(y+4) ) must be greater than or equal to 0
Algebraically, 2(y+4) ≥ 0
=> y ≥ -4
3. The x-values (domain/inputs/pre-images) extend from (-4) to +ve infinity or x ≥ -4
4. The y-values (range/outputs/images) extend from (-4) to +ve infinity or y ≥ -4