Find the domain and range of the function f(x)=x^(2)-18. What is the domain of the function?
A) (-[infinity], [infinity])
B) (-[infinity], 18)
C) (-[infinity], -18)
D) (-18, [infinity]). What is the range of the function?
A) (-[infinity], [infinity])
B) (-[infinity], -18)
C) (-18, [infinity])
D) (-[infinity], 18).