Answer:
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
