Geometric Sequences and Series

Geometric Sequences and Series

25 Qs

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Geometric Sequences and Series

Geometric Sequences and Series

Assessment

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Created by

Victoria Colbert

Used 17+ times

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25 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the common ratio for the sequence:
28, 14, 7, 3.5...

2
1/2
-14
-7

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the common ratio: 4, -16, 64, -256, ...

r = -4
r = 2
r = -2
r = 4

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the common ratio for the following geometric sequence:

7, -7, 7, -7, ...

1

-1

7

-7

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the next three terms: -4, -12, -36, -108, ...

36, -108, 324
-324, -972, -2916
324, -972, 2916
-108, 324, -972

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Write an explicit rule for the general term of the sequence 5, 15, 45, . . . ?

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

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Write the explicit formula for the following geometric sequence:

10, 20, 40, 80, ...

an = 10(2)n-1

an = 2(10)n-1

an = 10(2)n

an = 2(10)n

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Write the explicit rule for the following geometric sequence:

2, -12, 72, ...

an = 72(-6)n-1

an = 2(-6)n-1

an = 2(6)n-1

an = 72(-6)n-1

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