7) Pls help with this question!!! It's urgent, I appreciate your help . Thank you. :)

Answer:
(-infinity, 7]
Step-by-step explanation:
-7v +49 >=0 (because of sqrt)
=> -7v >= -49
=>v <=7
Answer:
Option 3
Step-by-step explanation:
Under the root, value should be non-negative, I.e 》0
-7v + 49 》0
7v《 49
v《 7
(-ve infinity, 7]