Sequences
a year ago
alishamccann
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11 QuestionsShow answers
  • Question 1
    30 seconds
    Q. Is the sequence arithmetic: 37, 31, 25, 19, ...
    answer choices
    Yes
    No
  • Question 2
    30 seconds
    Q. Is the sequence 2, 4, 12, 48,... geometric?
    answer choices
    yes
    no
  • Question 3
    45 seconds
    Q.

    5, 15, 45, 135 is a ...

    answer choices

    Geometric sequence with r = 3

    Geometric sequence with r = 1/3

    Arithmetic sequence with d = 10

    Arithmetic sequence with d = 3

  • Question 4
    45 seconds
    Q. Identify the common difference.
    97, 86, 75, 64, ...
    answer choices
    8
    11
    -11
    -8
  • Question 5
    45 seconds
    Q. Find the common ratio: 4, -16, 64, -256, ...
    answer choices
    r = -4
    r = 2
    r = -2
    r = 4
  • Question 6
    120 seconds
    Q.

    Write a formula for the following sequence:

    5, 8, 11, 14, 17...

    answer choices

    an = 3n + 2

    an = 8 - 5n

    an = 5(3)n-1

    an = 5 + 3n

  • Question 7
    120 seconds
    Q.

    Write a formula for the following sequence:

    4, 12, 36, 108...

    answer choices

    an = 4(3n-1)

    an = 4(3n)

    an = 4+3n

    an = 4(3n)

  • Question 8
    120 seconds
    Q.

    Write a formula for the following sequence:

    2, 8, 14, ...

    answer choices

    an = 2 + 6n

    an = - 6 + 6n

    an = 6n - 4

    an = 4 - 6n

  • Question 9
    120 seconds
    Q.

    What is the 100th term in the sequence an = 4n-12

    answer choices

    388

    40012

    -388

    100

  • Question 10
    120 seconds
    Q. Given a1= 5 and d= 2 find a6
    answer choices
    13
    10
    15
    17
  • Question 11
    180 seconds
    Q.

    Find a18 for the following geometric sequence,

    -3, 6, -12, 24,,,

    answer choices

    -37

    -786,432

    393,216

    258,280,326

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