WorksheetsUnit 8 Review
Total questions: 11
Worksheet time: 44mins
Name
Class
Date
1.
Which sequence is arithmetic?
a)
4, 8, 16, 32, 64, ...
b)
4, 6, 10, 12, 16, ...
c)
4, 1, -2, -5, -8, ...
d)
4, 2, 1, 1/2, 1/4, ...
2.
Find the sum for the following series.
a)
44
b)
-162
c)
-682
d)
324
3.
Which recursive formula best describes the following sequence:
3, 8, 13, 18, 23...
3, 8, 13, 18, 23...
a)
an = (3)n-1 ; a1 =5
b)
an = (5)n-1 ; a1 =3
c)
an = an-1+3 ; a1 =5
d)
an = an-1+5 ; a1 =3
4.
Identify the common difference.
97, 86, 75, 64, ...
97, 86, 75, 64, ...
a)
8
b)
11
c)
-11
d)
-8
5.
What is the common ratio for the sequence:
28, 14, 7, 3.5...
28, 14, 7, 3.5...
a)
2
b)
1/2
c)
-14
d)
-7
6.
-21, -16, -11, -6, ...
Is this sequence arithmetic, geometric, or neither?
a)
arithmetic (common difference d = 5)
b)
geometric (common ratio r = 5)
c)
neither
7.
Find the 22nd term of the following sequence:
5, 8, 11, ...
5, 8, 11, ...
a)
14
b)
68
c)
63
d)
71
8.
Given the sequence:
25, 21, 17, 13,...
Write the explicit equation that models the sequence.
a)
an = 4n + 29
b)
an = - 4n + 25
c)
an = - 4n + 29
d)
an = 4n + 25
9.
Find the common difference: a2 = 6 and a6 = -14
a)
-1
b)
-5
c)
-2
d)
2
10.
What is the recursive rule for the sequence
2, 6, 18, 54, ...?
2, 6, 18, 54, ...?
a)
an=2(3)n-1
b)
a1 = 2, an = an-1 + 4
c)
a1 = 2, an = 3an-1
d)
a1 = 3, an = 2an-1
11.
What type of series is
32 + 16 + 8 + 4 + 2 + 1
32 + 16 + 8 + 4 + 2 + 1
a)
Finite Arithmetic
b)
Finite Geometric
c)
Infinite Arithmetic
d)
Infinite Geometric
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