I need help answering the following multiple choice questions!!! I need to raise my grades ASAP. Thank you for your help.

x Brook Singleton’s Home Pa X ALG II B 2522: Sequence X

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A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=828128_idLesson=861111&page=1&.id Webuse .. ☆

Lesson 7: Sequences and Series Unit Test

ALG II B 2522 Unit 5: Sequences and Series

Assessment

1. What are the first five terms of the sequence given by the formula an= 4n+ 1? (1 point)

O1,5,9,13, 17

O9, 13, 17, 21, 25

O5, 9, 13, 17, 21

O4, 8, 12, 16, 20

C

o

2. Write a recursive definition for the sequence 11, 8.5, 2,… (1 point)

O aj = 11, an=2n-1-4

O a1 = 11. an = an-1-3

O a1 = 2, an=an-1-3

O aj = 2, an= 27-1 + 3

3. Write an explicit formula for the sequence-3.1.5.9…. (1 point)

Oan=-3 + 4(n-1)

Oan=-3 + 4n

Oan=-3 + (n-1)

Oan=-3 +4(n+1)

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x Brook Singleton’s Home Pa X ALG II B 2522: Sequence X

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A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=82812&idLesson=861111&page=1&idWebuse ☆

Lesson 7: Sequences and Series Unit Test

ALG II B 2522 Unit 5: Sequences and Series

Assessment

4. Suppose you drop a tennis ball from a height of 8 feet. After the ball hits the floor, it rebounds (1 point)

to 80% of its previous height. How high will the ball rebound after its third bounce? Round to

the nearest tenth.

O3.3 feet

O4.1 feet

O 5.1 feet

01 feet

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C

o

5. The table shows the predicted growth of particular bacterium after various numbers of hours.

Write an explicit formula for the sequence of the number of bacterium.

(1 point)

Hours (n)

1

2

3

4

5

Number of bacterium

24 48 72 96 120

Oan=24n + 1

Oan=24n

1

24

O an=n+24

Oan=

7

OD

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X Brook Singleton’s Home Pa X ALG II B 2522: Sequence X

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A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=82812&idLesson=861111&page=1&idWebuse ☆

Lesson 7: Sequences and Series Unit Test

ALG II B 2522 Unit 5: Sequences and Series

Assessment

6. Is the sequence arithmetic? If so, identify the common difference. (1 point)

14, 21, 42, 77, …

Oyes: 7

Oyes; -7

Oyes; 14

O no

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7. What is the 12th term of the sequence 20. 16. 12. …? (1 point)

0-30

0-20

0-28

0-24

32… (1 point)

8. Find the missing term of the arithmetic sequence 20,

O42

O 18

O 34

O 26

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X Brook Singleton’s Home Pa X ALG II B 2522: Sequence X

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A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=82812&idLesson=861111&page=1&idWebuse ☆

Lesson 7: Sequences and Series Unit Test

ALG II B 2522 Unit 5: Sequences and Series

Assessment

9. Is the sequence geometric? If so, identify the common ratio. (1 point)

1 2 4 8 16

3’9’27’ 81′ 243 ***

93 NM-14

Oyes,

2

Oyes;

3

1

9

1

Oyes;

6

O not geometric

10. What is the 10th term of the sequence 81. 27.9…. (1 point)

1

Ο ο

729

1

оо

243

1

081

1

810

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x Brook Singleton’s Home Pa X ALG II B 2522: Sequence X

+ V

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0

A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=828128_idLesson=861111&page=1&.id Webuse .. ☆

Lesson 7: Sequences and Series Unit Test

ALG II B 2522 Unit 5: Sequences and Series

Assessment

11. What is a possible value for the missing term of the geometric sequence? (1 point)

37,

925,-

O-185

0-4,625

0-925

O 481

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C

o

12. What is the sum of the finite arithmetic series? (1 point)

(-10) + 0 + 10 + 20+ … +130

O 900

O 1,000

O 950

0955

13. Use summation notation to write the series 6.6 + 15.4 + 24.2 + … for 5 terms.

(1 point)

Note: In each of these images, the lower limit of the summation notation is either “n=1” or “n

= 0”.

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