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1. |
Determine whether the sequence 3, 12, 48, 192 is geometric. If so, find its common ratio. |
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A. |
not geometric |
B. |
geometric, r = 3 |
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C. |
geometric, r = 4 |
D. |
geometric, r = 9 |
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Hint |
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2. |
What are the next three terms of the geometric sequence 4, 10, 25,…? |
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A. |
100, 400, 1600 |
B. |
100, 250, 1000 |
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C. |
62.5, 312.5, 1562.5 |
D. |
62.5, 156.25, 390.625 |
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Hint |
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3. |
A formula in which the nth term of a sequence is expressed in terms of the previous term, as in  is called what? |
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A. |
dependent |
B. |
geometric |
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C. |
exponential |
D. |
recursive |
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Hint |
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4. |
Find the geometric mean in the sequence 4, , 196. |
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A. |
28 or –28 |
B. |
7 only |
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C. |
28 only |
D. |
7 or –7 |
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Hint |
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5. |
Suppose that the geometric mean of two numbers is 48, and the first number is 12. What is the second number? |
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A. |
24 |
B. |
192 |
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C. |
96 |
D. |
84 |
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Hint |
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