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Resources

Geometric sequences

Jonathan is reviewing his cell phone bill. When he gets to the text message part, he notices that he sent

28

text messages in January,

84

text messages in February,

252

text messages in March, and

756

text messages in April. What kind of sequence is this?

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Cora got a new video game. She scored

1

point on the first level,

1

point on the second level,

2

points on the third level, and

3

points on the fourth level. What kind of sequence is this?

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12

pieces of mail in October,

48

pieces of mail in November,

192

pieces of mail in December, and

768

pieces of mail in January. What kind of sequence is this?

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What kind of sequence is this?

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2, 3, 5, 8, \dots

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16

e-mails on Friday,

25

e-mails on Saturday,

36

e-mails on Sunday, and

49

e-mails on Monday. What kind of sequence is this?

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While sorting some beads, Grace put

862

beads in the first jar,

862

beads in the second jar,

862

beads in the third jar, and

862

beads in the fourth jar. What kind of sequence is this?

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Tyrone has a garden and likes to put flowers from his garden into pretty vases. Tyrone put

11

flowers in the first vase,

22

flowers in the second vase,

44

flowers in the third vase, and

88

flowers in the fourth vase. What kind of sequence is this?

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13000 \div 100

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Fill in the blank:

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\square \times 6000 = 3,600,000

Select the outlier in the data set.

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55, 65, 75, 76, 83, 85, 91, 93, 734

Select the outlier in the data set.

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45, 55, 65, 75, 85, 87, 95, 392

Select the outlier in the data set.

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28, 37, 61, 70, 72, 92, 96, 621

Select the outlier in the data set.

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75, 84, 86, 87, 90, 91, 93, 773

Find an explicit formula for the geometric sequence

-1, -7, -49, -343

the first term should be

b(1)

Find the sum of the first

10

terms of the following series, to the nearest integer.

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6,12,24, \ldots

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Find the sum of the first

38

terms of the following series, to the nearest integer.

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2,11,20, \ldots

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Find the sum of the first

10

terms of the following series, to the nearest integer.

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21,126,756, \ldots

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Find the sum of the first

9

terms of the following series, to the nearest integer.

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4,6,9, \ldots

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Find the sum of the first

7

terms of the following series, to the nearest integer.

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25,100,400, \ldots

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Find the sum of the first

9

terms of the following series, to the nearest integer.

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22,44,88, \ldots

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Find the sum of the first

38

terms of the following series, to the nearest integer.

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9,12,15, \ldots

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Find the sum of the first

10

terms of the following series, to the nearest integer.

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63,21,7, \ldots

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Find the sum of the first

41

terms of the following series, to the nearest integer.

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8,14,20, \ldots

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Find the sum of the first

10

terms of the following series, to the nearest integer.

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15,30,60, \ldots

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Find the sum of the first

43

terms of the following series, to the nearest integer.

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4,12,20, \ldots

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Find the sum of the first

38

terms of the following series, to the nearest integer.

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3,9,15, \ldots

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Find the sum of the first

6

terms of the following series, to the nearest integer.

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20,10,5, \ldots

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Click and drag like terms onto each other to simplify fully.

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5 y-5 x-4 x^{2}+5 x^{3}-2 x^{2}+x^{3}-2 x^{2}

Find the common ratio of the geometric sequence

19,95,475, \ldots

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Find the common difference of the arithmetic sequence

9,12,15, \ldots

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Find the common ratio of the geometric sequence

18,162,1458, \ldots

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Find the common difference of the arithmetic sequence

1,7,13, \ldots

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Find the common difference of the arithmetic sequence

12,9,6, \ldots

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Find the common difference of the arithmetic sequence

-5,-1,3, \ldots

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100

th term of the arithmetic sequence

18,31,44, \ldots

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73

rd term of the arithmetic sequence

-28,-34,-40, \ldots

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84

th term of the arithmetic sequence

23,39,55, \ldots

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10^{\text {th }}

term of the geometric sequence

7,28,112, \ldots

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9^{\text {th }}

term of the geometric sequence

1,4,16, \ldots

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12^{\text {th }}

term of the geometric sequence

5,25,125, \ldots

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8^{\text {th }}

term of the geometric sequence

9,-27,81, \ldots

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9^{\text {th }}

term of the geometric sequence

2,8,32, \ldots

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8^{\text {th }}

term of the geometric sequence

5,20,80, \ldots

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9^{\text {th }}

term of the geometric sequence

2,6,18, \ldots

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10^{\text {th }}

term of the geometric sequence

1,-2,4, \ldots

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9^{\text {th }}

term of the geometric sequence

5,15,45, \ldots

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8^{\text {th }}

term of the geometric sequence

2,6,18, \ldots

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10^{\text {th }}

term of the geometric sequence

5,-25,125, \ldots

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13^{\text {th }}

term of the geometric sequence

3,-12,48, \ldots

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The first three terms of a sequence are given. Write your answer as a decimal or whole number. Round to the nearest thousandth (if necessary).

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404,396,388, \ldots

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44

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