Respuesta :

ronhagrid310

Answer:

(-infinity, 7]

Step-by-step explanation:

-7v +49 >=0 (because of sqrt)

=> -7v >= -49

=>v <=7

amna04352

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]