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Math Problems
Algebra 1
Domain and range of quadratic functions: equations
What is the domain of this quadratic function?
\newline
y
=
x
2
−
2
x
−
15
y = x^2 - 2x - 15
y
=
x
2
−
2
x
−
15
\newline
Choices:
\newline
(A)
{
x
∣
x
≤
1
}
\{x | x \leq 1\}
{
x
∣
x
≤
1
}
\newline
(B)
{
x
∣
x
≥
0
}
\{x | x \geq 0\}
{
x
∣
x
≥
0
}
\newline
(C)
{
x
∣
x
≥
−
16
}
\{x | x \geq -16\}
{
x
∣
x
≥
−
16
}
\newline
(D)all real numbers
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What is the range of this quadratic function?
\newline
y
=
x
2
+
2
x
−
3
y = x^2 + 2x - 3
y
=
x
2
+
2
x
−
3
\newline
Choices:
\newline
(A)
y
∣
y
≥
4
{y | y \geq 4}
y
∣
y
≥
4
\newline
(B)
y
∣
y
≥
−
4
{y | y \geq -4}
y
∣
y
≥
−
4
\newline
(C)
y
∣
y
≥
−
1
{y | y \geq -1}
y
∣
y
≥
−
1
\newline
(D)all real numbers
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What is the domain of this quadratic function?
\newline
y
=
x
2
+
6
x
+
9
y = x^2 + 6x + 9
y
=
x
2
+
6
x
+
9
\newline
Choices:
\newline
(A)
{
x
∣
x
≥
−
3
}
\{x | x \geq -3\}
{
x
∣
x
≥
−
3
}
\newline
(B)
{
x
∣
x
≥
0
}
\{x | x \geq 0\}
{
x
∣
x
≥
0
}
\newline
(C)
{
x
∣
x
≤
−
3
}
\{x | x \leq -3\}
{
x
∣
x
≤
−
3
}
\newline
(D)all real numbers
Get tutor help
What is the domain of this quadratic function?
\newline
y
=
x
2
−
4
x
+
3
y = x^2 - 4x + 3
y
=
x
2
−
4
x
+
3
\newline
Choices:
\newline
(A)
{
x
∣
x
≥
−
1
}
\{x | x \geq -1\}
{
x
∣
x
≥
−
1
}
\newline
(B)
{
x
∣
x
≥
2
}
\{x | x \geq 2\}
{
x
∣
x
≥
2
}
\newline
(C)
{
x
∣
x
≤
2
}
\{x | x \leq 2\}
{
x
∣
x
≤
2
}
\newline
(D)all real numbers
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What is the range of this quadratic function?
\newline
y
=
x
2
+
8
x
+
16
y = x^2 + 8x + 16
y
=
x
2
+
8
x
+
16
\newline
Choices:
\newline
(A)
y
∣
y
≥
0
{y | y \geq 0}
y
∣
y
≥
0
\newline
(B)
y
∣
y
≤
0
{y | y \leq 0}
y
∣
y
≤
0
\newline
(C)
y
∣
y
≥
−
4
{y | y \geq -4}
y
∣
y
≥
−
4
\newline
(D)all real numbers
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What is the range of this quadratic function?
\newline
y
=
x
2
−
8
x
+
12
y = x^2 - 8x + 12
y
=
x
2
−
8
x
+
12
\newline
Choices:
\newline
(A)
{
y
∣
y
≤
−
4
}
\{y | y \leq -4\}
{
y
∣
y
≤
−
4
}
\newline
(B)
{
y
∣
y
≥
4
}
\{y | y \geq 4\}
{
y
∣
y
≥
4
}
\newline
(C)
{
y
∣
y
≥
−
4
}
\{y | y \geq -4\}
{
y
∣
y
≥
−
4
}
\newline
(D)all real numbers
Get tutor help
What is the range of this quadratic function?
\newline
y
=
x
2
−
4
x
−
12
y = x^2 - 4x - 12
y
=
x
2
−
4
x
−
12
\newline
Choices:
\newline
(A)
y
∣
y
≥
−
16
{y | y \geq -16}
y
∣
y
≥
−
16
\newline
(B)
y
∣
y
≥
2
{y | y \geq 2}
y
∣
y
≥
2
\newline
(C)
y
∣
y
≥
16
{y | y \geq 16}
y
∣
y
≥
16
\newline
(D)all real numbers
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Consider the function
h
(
x
)
=
−
(
2
sin
(
1
−
x
)
+
8
)
h(x) = -(2\sin(1-x) + 8)
h
(
x
)
=
−
(
2
sin
(
1
−
x
)
+
8
)
.
\newline
Giving your answer in interval notation, find the domain of
h
−
1
(
x
)
h^{-1}(x)
h
−
1
(
x
)
.
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Consider the function
h
(
x
)
=
−
(
2
sin
(
1
−
x
)
+
8
)
h(x)=-(2 \sin (1-x)+8)
h
(
x
)
=
−
(
2
sin
(
1
−
x
)
+
8
)
.
\newline
Giving your answer in interval notation, find the domain of
h
−
1
(
x
)
h^{-1}(x)
h
−
1
(
x
)
.
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Helen has a remote-control boat that she drives in a pond at Blake Park. The boat has a maximum speed of
8
8
8
meters per second. She accelerates the boat to its maximum speed and drives it for
1
1
1
minute around the pond before decelerating. The function
D
(
t
)
D(t)
D
(
t
)
represents the distance the boat has traveled at maximum speed after
t
t
t
seconds.
\newline
What is the domain of
D
(
t
)
D(t)
D
(
t
)
?
\newline
Choices:
\newline
(A)all multiples of
8
8
8
\newline
(B)all real numbers less than
60
60
60
\newline
(C)all real numbers from
0
0
0
to
60
60
60
\newline
(D)all whole numbers from
0
0
0
to
8
8
8
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Stefan works as a pizza chef. He begins his day by preheating the pizza oven. Today, the oven's interior temperature was
72
°
F
72\degree\text{F}
72°
F
when Stefan turned it on high-power to preheat. The temperature rose steadily at a rate of
12
°
F
12\degree\text{F}
12°
F
per minute until it reached its ideal temperature an hour later. Then, Stefan reduced the power so the temperature would stop rising. The function
T
(
m
)
T(m)
T
(
m
)
represents the oven's interior temperature, in
°
F
\degree\text{F}
°
F
, after
m
m
m
minutes of preheating.
\newline
What is the domain of
T
(
m
)
T(m)
T
(
m
)
?
\newline
Choices:
\newline
(A)all real numbers from
0
0
0
to
72
72
72
\newline
(B)all whole numbers greater than or equal to
72
72
72
\newline
(C)all real numbers from
0
0
0
to
12
°
F
12\degree\text{F}
12°
F
0
0
0
\newline
(D)all whole numbers less than or equal to
12
°
F
12\degree\text{F}
12°
F
1
1
1
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Stefan works as a pizza chef. He begins his day by preheating the pizza oven. Today, the oven's interior temperature was
72
°
F
72\degree\text{F}
72°
F
when Stefan turned it on high-power to preheat. The temperature rose steadily at a rate of
12
°
F
12\degree\text{F}
12°
F
per minute until it reached its ideal temperature an hour later. Then, Stefan reduced the power so the temperature would stop rising. The function
T
(
m
)
T(m)
T
(
m
)
represents the oven's interior temperature, in
°
F
\degree\text{F}
°
F
, after
m
m
m
minutes of preheating.
\newline
What is the domain of
T
(
m
)
T(m)
T
(
m
)
?
\newline
(A) all whole numbers greater than or equal to
72
72
72
\newline
(B) all real numbers from
0
0
0
to
72
72
72
\newline
(C) all whole numbers less than or equal to
12
12
12
\newline
(D) all real numbers from
0
0
0
to
12
°
F
12\degree\text{F}
12°
F
1
1
1
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Today, Madelyn is running a
10
10
10
-mile race and using her watch to help with pacing. She will run at a steady pace of
9
9
9
minutes per mile, and so she expects to finish the race in
90
90
90
minutes. The function
D
(
m
)
D(m)
D
(
m
)
represents the distance Madelyn has left to run, in miles, after
m
m
m
minutes.
\newline
What is the domain of
D
(
m
)
D(m)
D
(
m
)
?
\newline
Choices:
\newline
(A)all real numbers from
0
0
0
to
10
10
10
\newline
(B)all whole numbers from
0
0
0
to
90
90
90
\newline
(C)all whole numbers from
0
0
0
to
10
10
10
\newline
(D)all real numbers from
0
0
0
to
90
90
90
Get tutor help
Write the following expression in simplified radical form.
\newline
16
s
3
t
4
3
\sqrt[3]{16 s^{3} t^{4}}
3
16
s
3
t
4
\newline
Assume that all of the variables in the expression represent positive real numbers.
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Which of the following radian measures is equal to
36
0
∘
360^{\circ}
36
0
∘
?
\newline
(The number of degrees of arc in a circle is
360
360
360
. The number of radians of arc in a circle is
2
π
2 \pi
2
π
.)
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find the range of
k
k
k
for the equation
x
2
−
2
k
x
+
k
2
−
2
k
=
6
x^2 - 2kx + k^2 - 2k = 6
x
2
−
2
k
x
+
k
2
−
2
k
=
6
has real roots. Find the roots in terms of
k
k
k
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What does the set
{
x
∣
x
>
−
4
}
\{x | x > -4\}
{
x
∣
x
>
−
4
}
represent?
\newline
Choices:
\newline
(A)all numbers greater than or equal to
−
4
-4
−
4
\newline
(B)all numbers less than or equal to
−
4
-4
−
4
\newline
(C)all numbers less than
−
4
-4
−
4
\newline
(D)all numbers greater than
−
4
-4
−
4
Get tutor help
What does the set
{
x
∣
x
≤
0
}
\{x | x \leq 0\}
{
x
∣
x
≤
0
}
represent?
\newline
Choices:
\newline
(A)all numbers greater than or equal to
0
0
0
\newline
(B)all numbers less than or equal to
0
0
0
\newline
(C)all numbers greater than
0
0
0
\newline
(D)all numbers equal to
0
0
0
Get tutor help
What does the set
{
x
∣
x
≥
−
15
}
\{x | x \geq -15\}
{
x
∣
x
≥
−
15
}
represent?
\newline
Choices:
\newline
(A)all numbers greater than
−
15
-15
−
15
\newline
(B)all numbers greater than or equal to
−
15
-15
−
15
\newline
(C)all numbers equal to
−
15
-15
−
15
\newline
(D)all numbers less than
−
15
-15
−
15
Get tutor help
What does the set
{
x
∣
x
≤
10
}
\{x | x \leq 10\}
{
x
∣
x
≤
10
}
represent?
\newline
Choices:
\newline
(A)all numbers less than
10
10
10
\newline
(B)all numbers less than or equal to
10
10
10
\newline
(C)all numbers greater than
10
10
10
\newline
(D)all numbers greater than or equal to
10
10
10
Get tutor help
What does the set
{
x
∣
x
≥
−
15
}
\{x | x \geq -15\}
{
x
∣
x
≥
−
15
}
represent?
\newline
Choices:
\newline
(A)all numbers greater than
−
15
-15
−
15
\newline
(B)all numbers less than
−
15
-15
−
15
\newline
(C)all numbers equal to
−
15
-15
−
15
\newline
(D)all numbers greater than or equal to
−
15
-15
−
15
Get tutor help
What does the set
{
x
∣
x
≤
10
}
\{x | x \leq 10\}
{
x
∣
x
≤
10
}
represent?
\newline
Choices:
\newline
(A)all numbers greater than
10
10
10
\newline
(B)all numbers greater than or equal to
10
10
10
\newline
(C)all numbers less than
10
10
10
\newline
(D)all numbers less than or equal to
10
10
10
Get tutor help
What does the set
{
x
∣
x
>
−
4
}
\{x | x > -4\}
{
x
∣
x
>
−
4
}
represent?
\newline
Choices:
\newline
(A)all numbers less than
−
4
-4
−
4
\newline
(B)all numbers greater than
−
4
-4
−
4
\newline
(C)all numbers greater than or equal to
−
4
-4
−
4
\newline
(D)all numbers less than or equal to
−
4
-4
−
4
Get tutor help
What does the set
{
x
∣
x
≥
−
15
}
\{x | x \geq -15\}
{
x
∣
x
≥
−
15
}
represent?
\newline
Choices:
\newline
(A)all numbers less than
−
15
-15
−
15
\newline
(B)all numbers greater than
−
15
-15
−
15
\newline
(C)all numbers greater than or equal to
−
15
-15
−
15
\newline
(D)all numbers equal to
−
15
-15
−
15
Get tutor help
Which of the following is a rational number?
\newline
Choices:
\newline
(A)
8
9
\frac{8}{9}
9
8
\newline
(B)
3
\sqrt{3}
3
\newline
(C)
π
\pi
π
\newline
(D)
2
\sqrt{2}
2
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Which of the following are whole numbers?
\newline
Multi-select Choices:
\newline
(A)
0
0
0
\newline
(B)
π
\pi
π
\newline
(C)
−
3
-3
−
3
\newline
(D)
6
\sqrt{6}
6
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Which of the following are natural numbers?
\newline
Multi-select Choices:
\newline
(A)
3
3
3
\newline
(B)
3
\sqrt{3}
3
\newline
(C)
π
\pi
π
\newline
(D)
9
9
9
Get tutor help
Which of the following are real numbers?
\newline
Multi-select Choices:
\newline
(A)
5
\sqrt{5}
5
\newline
(B)
π
\pi
π
\newline
(C)
1
2
\frac{1}{2}
2
1
\newline
(D)
0
0
0
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Which of the following are irrational numbers?
\newline
Multi-select Choices:
\newline
(A)
5
5
5
\newline
(B)
2
2
2
\newline
(C)
6
\sqrt{6}
6
\newline
(D)
5
\sqrt{5}
5
Get tutor help
Suppose that the function
h
h
h
is defined, for all real numbers, as follows.
\newline
h
(
x
)
=
{
1
2
x
−
2
if
x
≤
−
2
−
(
x
+
1
)
2
if
−
2
<
x
≤
1
−
1
if
x
>
1
h(x)=\left\{\begin{array}{ll} \frac{1}{2} x-2 & \text { if } x \leq-2 \\ -(x+1)^{2} & \text { if }-2<x \leq 1 \\ -1 & \text { if } x>1 \end{array}\right.
h
(
x
)
=
⎩
⎨
⎧
2
1
x
−
2
−
(
x
+
1
)
2
−
1
if
x
≤
−
2
if
−
2
<
x
≤
1
if
x
>
1
\newline
Find
h
(
−
3
)
,
h
(
−
1
)
h(-3), h(-1)
h
(
−
3
)
,
h
(
−
1
)
, and
h
(
1
)
h(1)
h
(
1
)
.
\newline
h
(
−
3
)
=
h
(
−
1
)
=
h
(
1
)
=
\begin{array}{l} h(-3)= \\ h(-1)= \\ h(1)= \end{array}
h
(
−
3
)
=
h
(
−
1
)
=
h
(
1
)
=
Get tutor help
Find the argument of the complex number
−
8
−
7
i
-8-7 i
−
8
−
7
i
in the interval
0
∘
≤
θ
<
36
0
∘
0^{\circ} \leq \theta<360^{\circ}
0
∘
≤
θ
<
36
0
∘
, rounding to the nearest tenth of a degree if necessary.
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The number of real values of
a
a
a
satisfying the equation
a
2
−
2
a
sin
x
+
1
=
0
a^{2}-2a \sin x+1=0
a
2
−
2
a
sin
x
+
1
=
0
is
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Suppose that the functions
f
f
f
and
g
g
g
are defined as follows.
\newline
f
(
x
)
=
x
x
−
2
g
(
x
)
=
x
+
1
x
−
2
f(x)=\frac{x}{x-2}\quad g(x)=\frac{x+1}{x-2}
f
(
x
)
=
x
−
2
x
g
(
x
)
=
x
−
2
x
+
1
\newline
Find
f
g
\frac{f}{g}
g
f
. Then, give its domain using an interval or union of intervals.
\newline
Simplify your answers.
\newline
(
f
g
)
(
x
)
=
[
Π
\left(\frac{f}{g}\right)(x)=\left[\Pi\right.
(
g
f
)
(
x
)
=
[
Π
\newline
Domain of
f
g
\frac{f}{g}
g
f
:
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(
3
3
3
) Given:
\newline
f
(
x
)
=
2
x
2
−
3
x
+
7
f(x)=2x^{2}-3x+7
f
(
x
)
=
2
x
2
−
3
x
+
7
with domain
\newline
−
2
,
−
1
,
3
,
4
{-2,-1,3,4}
−
2
,
−
1
,
3
,
4
\newline
What is the largest integer in the range of
\newline
f
f
f
?
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What is the Domain of
\newline
f
(
x
)
=
(
x
+
8
)
(
2
x
2
−
3
x
−
5
)
f(x)=\frac{(x+8)}{(2x^{2}-3x-5)}
f
(
x
)
=
(
2
x
2
−
3
x
−
5
)
(
x
+
8
)
Get tutor help
Which of the following describe
3
p
3p
3
p
?
\newline
Select all that apply.
\newline
(1) Real number
\newline
(2) Integer
\newline
(3) Whole number
\newline
(4) Natural number
\newline
(5) Number
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Which of the following are rational numbers?
\newline
Multi-select Choices:
\newline
(A)
1
7
\frac{1}{7}
7
1
\newline
(B)
0
0
0
\newline
(C)
9.81
9.81
9.81
\newline
(D)
9
4
\frac{9}{4}
4
9
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Do Now: find all rational & complex roots
\newline
0
=
x
4
−
9
x
2
0=x^{4}-9x^{2}
0
=
x
4
−
9
x
2
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x
<
3
x<3
x
<
3
in Interval Notation is
(
∞
,
3
)
(\infty, 3)
(
∞
,
3
)
\newline
True
\newline
False
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f
g
(
x
)
=
11
x
+
2
x
2
−
7
x
−
3
x
2
+
4
\frac{f}{g}(x) = \frac{11x + 2x^2}{-7x - 3x^2 + 4}
g
f
(
x
)
=
−
7
x
−
3
x
2
+
4
11
x
+
2
x
2
Find the domain
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Let
h
h
h
be a continuous function on the closed interval
[
0
,
4
]
[0,4]
[
0
,
4
]
, where
h
(
0
)
=
2
h(0)=2
h
(
0
)
=
2
and
h
(
4
)
=
−
2
h(4)=-2
h
(
4
)
=
−
2
.
\newline
Which of the following is guaranteed by the Intermediate Value Theorem?
\newline
Choose
1
1
1
answer:
\newline
(A)
h
(
c
)
=
−
1
h(c)=-1
h
(
c
)
=
−
1
for at least one
c
c
c
between
−
2
-2
−
2
and
2
2
2
\newline
(B)
h
(
c
)
=
3
h(c)=3
h
(
c
)
=
3
for at least one
c
c
c
between
−
2
-2
−
2
and
2
2
2
\newline
(C)
h
(
c
)
=
−
1
h(c)=-1
h
(
c
)
=
−
1
for at least one
c
c
c
between
0
0
0
and
4
4
4
\newline
(D)
h
(
c
)
=
3
h(c)=3
h
(
c
)
=
3
for at least one
c
c
c
between
0
0
0
and
4
4
4
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Let
f
f
f
be a continuous function on the closed interval
[
1
,
5
]
[1,5]
[
1
,
5
]
, where
f
(
1
)
=
1
f(1)=1
f
(
1
)
=
1
and
f
(
5
)
=
−
3
f(5)=-3
f
(
5
)
=
−
3
.
\newline
Which of the following is guaranteed by the Intermediate Value Theorem?
\newline
Choose
1
1
1
answer:
\newline
(A)
f
(
c
)
=
−
2
f(c)=-2
f
(
c
)
=
−
2
for at least one
c
c
c
between
1
1
1
and
5
5
5
\newline
(B)
f
(
c
)
=
−
2
f(c)=-2
f
(
c
)
=
−
2
for at least one
c
c
c
between
−
3
-3
−
3
and
1
1
1
\newline
(C)
f
(
c
)
=
2
f(c)=2
f
(
c
)
=
2
for at least one
c
c
c
between
1
1
1
and
5
5
5
\newline
(D)
f
(
c
)
=
2
f(c)=2
f
(
c
)
=
2
for at least one
c
c
c
between
−
3
-3
−
3
and
1
1
1
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Which of the following functions are continuous for all real numbers?
\newline
g
(
x
)
=
2
x
g(x)=2^{x}
g
(
x
)
=
2
x
\newline
f
(
x
)
=
ln
(
x
)
f(x)=\ln (x)
f
(
x
)
=
ln
(
x
)
\newline
Choose
1
1
1
answer:
\newline
(A)
g
g
g
only
\newline
(B)
f
f
f
only
\newline
(C) Both
g
g
g
and
f
f
f
\newline
(D) Neither
g
g
g
nor
f
f
f
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Which of the following functions are continuous at
x
=
0
x=0
x
=
0
?
\newline
g
(
x
)
=
cot
(
x
)
g(x)=\cot (x)
g
(
x
)
=
cot
(
x
)
\newline
h
(
x
)
=
1
x
2
h(x)=\frac{1}{x^{2}}
h
(
x
)
=
x
2
1
\newline
Choose
1
1
1
answer:
\newline
(A)
g
g
g
only
\newline
(B)
h
h
h
only
\newline
(C) Both
g
g
g
and
h
h
h
\newline
(D) Neither
g
g
g
nor
h
h
h
Get tutor help
Which of the following functions are continuous for all real numbers?
\newline
h
(
x
)
=
1
x
2
h(x)=\frac{1}{x^{2}}
h
(
x
)
=
x
2
1
\newline
g
(
x
)
=
x
2
g(x)=x^{2}
g
(
x
)
=
x
2
\newline
Choose
1
1
1
answer:
\newline
(A)
h
h
h
only
\newline
(B)
g
g
g
only
\newline
(C) Both
h
h
h
and
g
g
g
\newline
(D) Neither
h
h
h
nor
g
g
g
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Which of the following functions are continuous for all real numbers?
\newline
f
(
x
)
=
tan
(
x
)
h
(
x
)
=
x
3
\begin{array}{l} f(x)=\tan (x) \\ h(x)=x^{3} \end{array}
f
(
x
)
=
tan
(
x
)
h
(
x
)
=
x
3
\newline
Choose
1
1
1
answer:
\newline
(A)
f
f
f
only
\newline
(B)
h
h
h
only
\newline
(C) Both
f
f
f
and
h
h
h
\newline
(D) Neither
f
f
f
nor
h
h
h
Get tutor help
Let
g
(
x
)
=
10
x
x
3
+
5
x
g(x)=\frac{10 x}{x^{3}+5 x}
g
(
x
)
=
x
3
+
5
x
10
x
when
x
≠
0
x \neq 0
x
=
0
.
\newline
g
g
g
is continuous for all real numbers.
\newline
Find
g
(
0
)
g(0)
g
(
0
)
.
\newline
Choose
1
1
1
answer:
\newline
(A)
0
0
0
\newline
(B)
2
2
2
\newline
(C)
5
5
5
\newline
(D)
10
\mathbf{1 0}
10
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Let
h
(
x
)
=
{
3
x
x
e
x
for
x
≠
0
k
for
x
=
0
h(x)=\left\{\begin{array}{ll}\frac{3 x}{x e^{x}} & \text { for } x \neq 0 \\ k & \text { for } x=0\end{array}\right.
h
(
x
)
=
{
x
e
x
3
x
k
for
x
=
0
for
x
=
0
\newline
h
h
h
is continuous for all real numbers.
\newline
What is the value of
k
k
k
?
\newline
Choose
1
1
1
answer:
\newline
(A)
0
0
0
\newline
(B)
1
1
1
\newline
(C)
3
3
3
\newline
(D)
e
e
e
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Let
h
(
x
)
=
x
2
−
49
x
+
7
h(x)=\frac{x^{2}-49}{x+7}
h
(
x
)
=
x
+
7
x
2
−
49
when
x
≠
−
7
x \neq-7
x
=
−
7
.
\newline
h
h
h
is continuous for all real numbers.
\newline
Find
h
(
−
7
)
h(-7)
h
(
−
7
)
.
\newline
Choose
1
1
1
answer:
\newline
(A)
−
7
-7
−
7
\newline
(B)
14
14
14
\newline
(C)
7
7
7
\newline
(D)
−
14
-14
−
14
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Let
g
(
x
)
=
x
2
−
x
−
12
x
−
4
g(x)=\frac{x^{2}-x-12}{x-4}
g
(
x
)
=
x
−
4
x
2
−
x
−
12
when
x
≠
4
x \neq 4
x
=
4
.
\newline
g
g
g
is continuous for all real numbers.
\newline
Find
g
(
4
)
g(4)
g
(
4
)
.
\newline
Choose
1
1
1
answer:
\newline
(A)
−
4
-4
−
4
\newline
(B)
−
3
-3
−
3
\newline
(C)
4
4
4
\newline
(D)
7
7
7
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