  ##### Print Instructions

NOTE: Only your test content will print.
To preview this test, click on the File menu and select Print Preview.

See our guide on How To Change Browser Print Settings to customize headers and footers before printing.

# Geometric Sequences (Grade 9)

Print Test (Only the test content will print)

## Geometric Sequences

1.
If $a_1=100$ and $r=1/2$, find the 5th term of this geometric sequence.
1. $1$
2. $1600$
3. $6 1/4$
4. $10,000$
5. none of these are correct
2.
Find the next three terms in this sequence: 5120, 1280, 320, 80...
1. -160, -400, -640
2. 20, 5, 1.25
3. 40, 20, 10
4. 76, 72, 68
3.
The first term of a geometric sequence is -2 and the common ratio is 3. What is the 12th term of the sequence?
1. -1,062,882
2. -6144
3. -354,294
4. 12288
4.
Find the tenth term of the geometric sequence if the first term is 5 and the common ratio is 2.
1. 1,000,000
2. 1,000,000,000
3. 2,560
4. 25,6000
5.
What is the seventh term of the sequence 24, 12, 6, 3,...?
1. 0
2. 0.25
3. 0.375
4. 1.5
6.
What are the fifth and seventh numbers in the sequence $1, 6, 36...$?
1. $216,7776$
2. $216,1296$
3. $7776,46656$
4. $1296,46656$
7.
What is the recursive function of the geometric sequence 3, 4.5, 6.75...?
1. $f(n)=1.5f(n-1)$ where $f(1)=3$
2. $f(n)=3xx1.5^(n-1)$
3. $f(n)=1.5xx3^(n-1)$
4. $f(n)=3f(n-1)$ where $f(1)=1.5$
8.
Which formula represents the general term of the following sequence? $1/2, -1, 2, -4, ...$
1. $a_n = 1/2 * 2^n$
2. $a_n = 1/2 * (-2)*(n-1)$
3. $a_n = 1/2 * -2^(n-1)$
4. $a_n = 1/2 * (-2)^(n-1)$
9.
Find the 12th term in the sequence:

3, 9, 27, 81...

10.
What is the next term in the sequence 16, 4, 1, ... ?

You need to be a HelpTeaching.com member to access free printables.
Already a member? Log in for access.    |    Go Back To Previous Page