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Algebra 2: sequences quiz

Total questions: 16

Worksheet time: 48mins

Name
Class
Date
1.

Find the first 5 terms of the sequence: an = 5n  3a_n\ =\ 5n\ -\ 3  

a)

-3, 2, 7, 12, 17

b)

2, 7, 12, 17, 22

c)

5, 2, -1, -4, -7

d)

2, 7, 32, 157, 782

2.

Write the first 5 terms of the sequence: an = n2  2na_n\ =\ n^2\ -\ 2n  

a)

3, 8, 15, 24, 35

b)

-2, -3, -5, -10, -17

c)

-1, -2, -3, -4, -5

d)

-1, 0, 3, 8, 15

3.

Find the next four terms of the arithmetic sequence 16, 24, 32,...

a)

40, 48, 56, 64

b)

36, 40, 44, 48

c)

35, 40, 45, 50

d)

40, 44, 50, 56

4.

5, 15, 45, 135 is a ...

a)

Geometric sequence with r = 3

b)

Geometric sequence with r = 1/3

c)

Arithmetic sequence with d = 10

d)

Arithmetic sequence with d = 3

5.

Write a formula for the following sequence:

5, 8, 11, 14, 17...

a)

an = 3(n-1) + 2

b)

an = 5 + (n-1)(3)

c)

an = 5 + (3)n-1

d)

an = 5 + 3n

6.
Given a1= 5 and d= 2 find a6
a)
13
b)
10
c)
15
d)
17
7.

What does a1 represent?

a)

Any term

b)

First term

c)

Last term

8.

Find the first four terms of the sequence given the rule:

gn = 4(5)n-1

a)

20, 100, 500, 2500

b)

5, 20, 80, 320

c)

4, 20, 100, 500

d)

4, 9, 14, 19

9.

Write the explicit rule for the arithmetic sequence

12, 10, 8, 6, ...

a)

an = 12+ (n -1)(-2)

b)

an = 2 + (n -1)(14)

c)

an = 12 + (n-1)(2)

d)

an = -12n + 14

10.
Determine the first five terms of the sequence using the rule:
a1 = 8; an = an-1 - 3
a)
8, 11, 14, 17, 20
b)
8, 5, 2, -1, -4
c)
8, 24, 72, 216, 648
d)
8, -24, 72, -216, 648
11.

Given the sequence 2, 8, 14, 20, 26, ... What is the common difference?

a)

2

b)

4

c)

6

d)

8

12.

What does r represent?

a)

Radical

b)

Common difference

c)

Common ratio

13.

What are the next 3 terms in the following geometric sequence:

512, 256, 128, ___, ___, ___, ...

a)

1024, 2048, 4096

b)

32, 8, 2

c)

64, 32, 16

d)

92, 66, 38

14.
Find the common ratio: 64, -16, 4, -1, ...
a)
r = -8
b)
r = -1/4
c)
r = -4
d)
r = 4
15.
Determine whether the sequence is arithmetic, geometric, or neither.
a)
arithmetic
b)
geometric
c)
neither
16.
Determine whether the sequence is arithmetic, geometric, or neither.
a)
arithmetic
b)
geometric
c)
neither