| |
| |
1. |
Determine whether the sequence 7, 21, 35, 49 is geometric. If so, find its common ratio. |
| |
|
A. |
not geometric |
B. |
geometric, r = 14 |
| |
|
C. |
geometric, r = 3 |
D. |
geometric, r = 7 |
| |
|
Hint |
|
| |
2. |
Find the next two terms of the geometric sequence 50, 40, 32, … |
| |
|
A. |
26, 22 |
B. |
25.6, 20.48 |
| |
|
C. |
24, 16 |
D. |
28.5, 25.52 |
| |
|
Hint |
|
| |
3. |
A formula in which the nth term of a sequence is expressed in terms of the previous term, as in  is called what? |
| |
|
A. |
dependent |
B. |
exponential |
| |
|
C. |
geometric |
D. |
recursive |
| |
|
Hint |
|
| |
4. |
What is the eighth term of the geometric sequence whose first three terms are 3, 6, and 12? |
| |
|
A. |
128 |
B. |
384 |
| |
|
C. |
256 |
D. |
768 |
| |
|
Hint |
|
| |
5. |
Find the geometric mean in the sequence 4, , 196. |
| |
|
A. |
7 or –7 |
B. |
28 only |
| |
|
C. |
7 only |
D. |
28 or –28 |
| |
|
Hint |
|
|
|