If f (x) = √x + 3 and g (x) = - 7x+7 which statement is true

A. 5 is in the domain

B. 5 is not in the domain

A. 5 is in the domain

Step-by-step explanation:

f (x) = √x + 3

g (x) = -7x+7

We have to determine that whether 5 is in the domain or not for the above functions.

Domain is the set of values, for which the function is defined. Here in f (x), we have an square root. The value inside the square root must be greater or equal to 0. Hence

x+3≥0

x≥-3

and 5≥-3

Hence 5 is in the Domain of f (x)

In g (x), it is a linear function, hence it is defined for all values of x. Hence 5 is in the domain.

There for A is correct