arithmetic sequence 2 | Mathematics Quiz

arithmetic sequence 2

1st - 5th grade

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Mathematics

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Question 1
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Q. Write the recursive formula for 4, 8, 12...
answer choices
a_n=a_n-1-7
a_n=a_n-1-4
a_n=a_n-1+3
a_n=a_n-1+4
an=an-1-7
alternatives
an=an-1-4
an=an-1+3
an=an-1+4
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Question 2
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Q. Given the sequence:
25, 21, 17, 13,...
Write the explicit equation that models the sequence. (Hint: Simplify your equation.)
answer choices
a_n = 4n + 29
a_n = -4n + 25
a_n= -4n + 29
a_n = 4n + 25
an = 4n + 29
alternatives
an = -4n + 25
an = -4n + 29
an = 4n + 25
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Question 3
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Q. Create the explicit formula for the sequence:
2, 8, 14, ...
(Hint: Write your formula and then simplify it.)
answer choices
a_n=2+6n
a_n=-6+6n
a_n=6n-4
a_n=4-6n
an=2+6n
alternatives
an=-6+6n
an=6n-4
an=4-6n
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Question 4
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Q. Given the sequence:
25, 21, 17, 13,...
Write the explicit equation that models the sequence. (Hint: Simplify your equation.)
answer choices
a_n = 4n + 29
a_n = -4n + 25
a_n= -4n + 29
a_n = 4n + 25
an = 4n + 29
alternatives
an = -4n + 25
an = -4n + 29
an = 4n + 25
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Question 5
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Q. Write a recursive rule for the sequence 17, 1, -15, -31 . . .
answer choices
a_n = a_n-1 + 16
a_n = a_n-1 - 17
a_n = a_n-1 - 15
a_n = a_n-1 - 16
an = an-1 + 16
alternatives
an = an-1 - 17
an = an-1 - 15
an = an-1 - 16
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Question 6
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Q. Write the recursive formula for the following sequence?
6, 4, 2, 0, . . .
answer choices
a_n = -2n + 8
a₁=6, a_n = a_n - 1 - 2
a₁ = 6, a_n = a_n-1 + 2
a₁ = 6, a_n = a_n-1 - 2
an = -2n + 8
alternatives
a1 =6, an = an - 1 - 2
a1 = 6, an = an-1 + 2
a1 = 6, an = an-1 - 2
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Question 7
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Q. Find the 32nd term of this sequence.
9, 4, -1, -6, -11, ...
answer choices
81
-34
-146
-225
81
alternatives
-34
-146
-225
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Question 8
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Q. Find the 32nd term of this sequence.
34, 37, 40, 43, ...
answer choices
32
64
127
356
32
alternatives
64
127
356
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Question 9
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Q. Find the 22nd term of the following sequence:
5, 8, 11, ...
answer choices
14
68
63
71
14
alternatives
68
63
71
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Question 10
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Q. Find the first term of the given sequence:
a₁₄=68
d=3
answer choices
14
20
26
29
14
alternatives
20
26
29
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