Arithmetic and Geometric Sequences
9 months ago
allison_coon_54652
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20 QuestionsShow answers
  • Question 1
    300 seconds
    Q. Create the explicit formula for the sequence:
    2, 8, 14, ...
    (Hint:  Write your formula and then simplify it.)
    answer choices
    an=2+6n
    an=-6+6n
    an=6n-4
    an=4-6n
  • Question 2
    300 seconds
    Q. Find the 22nd term of the following sequence:
    5, 8, 11, ...
    answer choices
    14
    68
    63
    71
  • Question 3
    300 seconds
    Q. Find the first term of the given sequence:
    a14=68
    d=3
    answer choices
    14
    20
    26
    29
  • Question 4
    60 seconds
    Q. Identify the common difference.
    97, 86, 75, 64, ...
    answer choices
    8
    11
    -11
    -8
  • Question 5
    300 seconds
    Q. Find the 32nd term of this sequence.
    34, 37, 40, 43, ...
    answer choices
    32
    64
    127
    356
  • Question 6
    300 seconds
    Q. Find the 25th term of the sequence if a1 = 5 and d = 0.5
    answer choices
    18
    17
    15
    14
  • Question 7
    180 seconds
    Q. What is the 15th term of the sequence an = -3n+50
    answer choices
    95
    -5
    5
    -95
  • Question 8
    180 seconds
    Q. What is the 10th term of the sequence an = 20-2n
    answer choices
    40
    -20
    7
    0
  • Question 9
    60 seconds
    Q. Is the sequence 7, 9, 12, 16,... geometric?
    answer choices
    yes
    no
  • Question 10
    60 seconds
    Q. What kind of sequence is the pattern 400, 200, 100, 50, 25, ...?
    answer choices
    Arithmetic
    Geometric
    Neither
  • Question 11
    60 seconds
    Q. What kind of sequence is the pattern 15, 17, 20, 24, 29, ...?
    answer choices
    Arithmetic
    Geometric
    Neither
  • Question 12
    900 seconds
    Q. You have $10 in you bank account.  It doubles every month.  How much money will you have after 5 months?
    answer choices
    $50
    $35
    $320
    $250
  • Question 13
    60 seconds
    Q.

    The explicit formula for a sequence is an = 5 − 3n. What is the value of a22 ?

    answer choices

    a22 = -61

    a22 = 61

    a22 = -1

    a22 = -51

  • Question 14
    180 seconds
    Q.

    This is an arithmetic sequence. 8, 7.3, 6.6, 5.9, . . .

    What function describes the sequence?

    answer choices

    f (x) = −0.7x + 8

    f (x) = −0.7x + 8.7

    f (x) = 0.7x + 8

    f (x) = 0.7x + 8.7

  • Question 15
    60 seconds
    Q.

    Identify the common difference or ratio.

    3, 7, 11, 15, ...

    answer choices

    Ratio, -4

    Difference, -4

    Difference, 4

    Ratio, 4

  • Question 16
    60 seconds
    Q. Carey is organizing her books and putting them on shelves. She put 2 books on the first shelf, 8 books on the second shelf, 32 books on the third shelf, and 128 books on the fourth shelf. What kind of sequence is this?
    answer choices
    Geometric
    Arithmetic
    Both
    Neither
  • Question 17
    60 seconds
    Q. What is the a12 term in the following sequence? 2, 4, 6, 8, 10, 12, ……….. 
    answer choices
    46
    34
    24
    88
  • Question 18
    300 seconds
    Q. Find the 25th term of the sequence if a1 = 5 and d = 0.5
    answer choices
    18
    17
    15
    14
  • Question 19
    900 seconds
    Q. What is a5 in the sequence defined as follows?
    an = 5 ⋅ 2(n-1) 
    answer choices
    a5 = 160
    a5 = 40
    a5 = 10
    a5 = 80
  • Question 20
    900 seconds
    Q. What is the explicit rule for the sequence:
    11, 22, 44, 88...
    answer choices
    un = 2(11)n-1
    un = 11(2)
    un = 11(2)n-1
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