Answer:
x is all real numbers
Step-by-step explanation:
Domain is the set of all values of x for which the function is defined.
Range is the set of all y values for which the function is defined
From the given graph , we have graph for all values for x.
The graph is continuous and smooth. there is no restriction for x.
So , the domain is all real numbers
x is all real numbers
C. x is all real numbers