Question

15)
What is the domain of the function f(x) = (x + 3)2?
A)
all integers
B)
all real numbers
C)
all integers greater than zero
D)
all real numbers greater than zero

Answer 1

the domain refers to the x-values. If you were to graph that function, what would be true?

Answer 2

the domain of a function is defined as the values of x for which the function is defined

Answer 3

so the given function domain is all REAL numbers

Answer 4

Always START with "All Real Number" and see if you have to throw anything out.