College Algebra Quiz
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FUNCTIONS & GRAPHS
Question 1
of 2
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Let
f
(
x
)
=
2
x
+
1
x
−
3
f(x) = \frac{2x + 1}{x - 3}
f
(
x
)
=
x
−
3
2
x
+
1
and
g
(
x
)
=
x
+
4
g(x) = \sqrt{x + 4}
g
(
x
)
=
x
+
4
. What is the domain of the composition
(
f
∘
g
)
(
x
)
(f \circ g)(x)
(
f
∘
g
)
(
x
)
?
A
(
−
4
,
∞
)
(-4, \infty)
(
−
4
,
∞
)
B
[
−
4
,
∞
)
∖
{
5
}
[-4, \infty) \setminus \{5\}
[
−
4
,
∞
)
∖
{
5
}
C
[
−
4
,
∞
)
∖
{
3
}
[-4, \infty) \setminus \{3\}
[
−
4
,
∞
)
∖
{
3
}
D
(
−
∞
,
∞
)
∖
{
3
}
(-\infty, \infty) \setminus \{3\}
(
−
∞
,
∞
)
∖
{
3
}
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