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Let’s check out your problem:
Given that
f
(
x
)
=
3
x
,
g
(
x
)
=
x
+
4
f(x)=3 x, g(x)=x+4
f
(
x
)
=
3
x
,
g
(
x
)
=
x
+
4
and
h
(
x
)
=
−
2
f
(
x
+
3
)
−
2
g
(
x
−
3
)
h(x)=-2 f(x+3)-2 g(x-3)
h
(
x
)
=
−
2
f
(
x
+
3
)
−
2
g
(
x
−
3
)
, then what is the value of
h
(
6
)
h(6)
h
(
6
)
?
\newline
Answer:
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Home
Math Problems
Grade 8
Write and solve direct variation equations
Full solution
Q.
Given that
f
(
x
)
=
3
x
,
g
(
x
)
=
x
+
4
f(x)=3 x, g(x)=x+4
f
(
x
)
=
3
x
,
g
(
x
)
=
x
+
4
and
h
(
x
)
=
−
2
f
(
x
+
3
)
−
2
g
(
x
−
3
)
h(x)=-2 f(x+3)-2 g(x-3)
h
(
x
)
=
−
2
f
(
x
+
3
)
−
2
g
(
x
−
3
)
, then what is the value of
h
(
6
)
h(6)
h
(
6
)
?
\newline
Answer:
Define Functions:
Define the functions
f
(
x
)
f(x)
f
(
x
)
,
g
(
x
)
g(x)
g
(
x
)
, and
h
(
x
)
h(x)
h
(
x
)
as given.
f
(
x
)
=
3
x
f(x) = 3x
f
(
x
)
=
3
x
g
(
x
)
=
x
+
4
g(x) = x + 4
g
(
x
)
=
x
+
4
h
(
x
)
=
−
2
f
(
x
+
3
)
−
2
g
(
x
−
3
)
h(x) = -2f(x + 3) - 2g(x - 3)
h
(
x
)
=
−
2
f
(
x
+
3
)
−
2
g
(
x
−
3
)
Calculate Values:
Calculate
f
(
x
+
3
)
f(x + 3)
f
(
x
+
3
)
and
g
(
x
−
3
)
g(x - 3)
g
(
x
−
3
)
for
x
=
6
x = 6
x
=
6
.
f
(
6
+
3
)
=
f
(
9
)
=
3
×
9
=
27
f(6 + 3) = f(9) = 3 \times 9 = 27
f
(
6
+
3
)
=
f
(
9
)
=
3
×
9
=
27
g
(
6
−
3
)
=
g
(
3
)
=
3
+
4
=
7
g(6 - 3) = g(3) = 3 + 4 = 7
g
(
6
−
3
)
=
g
(
3
)
=
3
+
4
=
7
Substitute Values:
Substitute the values of
f
(
9
)
f(9)
f
(
9
)
and
g
(
3
)
g(3)
g
(
3
)
into the
h
(
x
)
h(x)
h
(
x
)
function.
\newline
h
(
6
)
=
−
2
×
f
(
9
)
−
2
×
g
(
3
)
h(6) = -2 \times f(9) - 2 \times g(3)
h
(
6
)
=
−
2
×
f
(
9
)
−
2
×
g
(
3
)
\newline
h
(
6
)
=
−
2
×
27
−
2
×
7
h(6) = -2 \times 27 - 2 \times 7
h
(
6
)
=
−
2
×
27
−
2
×
7
Perform Arithmetic Operations:
Perform the arithmetic operations to find the value of
h
(
6
)
h(6)
h
(
6
)
.
h
(
6
)
=
−
2
×
27
−
2
×
7
h(6) = -2 \times 27 - 2 \times 7
h
(
6
)
=
−
2
×
27
−
2
×
7
h
(
6
)
=
−
54
−
14
h(6) = -54 - 14
h
(
6
)
=
−
54
−
14
h
(
6
)
=
−
68
h(6) = -68
h
(
6
)
=
−
68
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a
a
a
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x
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x
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1
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Find the average value of the function
f
(
x
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x
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f
(
x
)
=
x
−
11
2
from
x
=
2
x=2
x
=
2
to
x
=
8
x=8
x
=
8
. Express your answer as a constant times
ln
3
\ln 3
ln
3
.
\newline
Answer:
□
ln
3
\square \ln 3
□
ln
3
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evaluate
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a
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6
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a
4
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3
b
when
a
=
4
a=4
a
=
4
and
b
=
3
b=3
b
=
3
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4
x
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32
k
x
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53
4 x-32 k x=53
4
x
−
32
k
x
=
53
\newline
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k
k
k
is a constant. The equation has no solution. What is the value of
k
k
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Question
If
a
1
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9
a_{1}=9
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1
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9
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n
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1
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2
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n
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2
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5
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\newline
Answer:
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Question
If
a
1
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4
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1
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n
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n
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n
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5
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\newline
Answer:
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Question
If
a
1
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1
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a
1
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1
and
a
n
=
n
a
n
−
1
+
4
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a
n
=
n
a
n
−
1
+
4
then find the value of
a
5
a_{5}
a
5
.
\newline
Answer:
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Question
If
a
1
=
9
a_{1}=9
a
1
=
9
and
a
n
=
n
a
n
−
1
−
2
a_{n}=n a_{n-1}-2
a
n
=
n
a
n
−
1
−
2
then find the value of
a
5
a_{5}
a
5
.
\newline
Answer:
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