 test arithmetic sequence
an hour ago
kitoumath_95800
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• Question 1
300 seconds
Report an issue Q. Find the 10th term.
16
12
21
30
• Question 2
300 seconds
Report an issue Q. Select the explicit rule that represents the sequence.
6 + 5(n - 1)
4 + 6(n - 1)
6 - 4(n - 1)
• Question 3
300 seconds
Report an issue Q. Select the explicit rule that represents the sequence.
14(-3)(n - 1)
3 + (n - 1)(14)
14 + (n - 1)(-3)
-3 + (n - 1)(14)
• Question 4
900 seconds
Report an issue
Q. Find the given term for the sequence.
Find the 30th term of 20, 11, 2, -7, -16, ...
29
-261
-241
cannot be determined
• Question 5
900 seconds
Report an issue
Q. Which formula represents this sequence:
2, 8, 14, ...
4n
n + 6
3n + 2
5n - 2
• Question 6
20 seconds
Report an issue
Q. Identify the common difference.
10, 20, 30, 40, ...
5
10
15
20
• Question 7
900 seconds
Report an issue
Q. Create the explicit formula for the sequence:
2, 8, 14, ...
(Hint:  Write your formula and then simplify it.)
an=2+6n
an=-6+6n
an=6n-4
an=4-6n
• Question 8
900 seconds
Report an issue
Q. Given the sequence:
25, 21, 17, 13,...
Write the explicit equation that models the sequence.  (Hint:  Simplify your equation.)
an = 4n + 29
an = -4n + 25
an = -4n + 29
an = 4n + 25
• Question 9
900 seconds
Report an issue
Q.

Write the explicit form for {2,-3,-8 ......}.

an = - 5n + 7

an = 5n - 7

an = - 5n - 7

an = - 5n - 3

• Question 10
900 seconds
Report an issue
Q.

What is the 46th term of this sequence?

{3,7,11,15,.......}

183

184

185

182

• Question 11
900 seconds
Report an issue
Q.

What is the sequence for an = 3 + (n-1)6

{6, 9, 12,.....}

{3, 9, 15, .......}

{3, 6, 9,.......}

{-3, -2, -1,....}

• Question 12
900 seconds
Report an issue
Q.

What is the explicit from for {-12, -20, -28,..}?

an = 8n - 4

an = -8n + 4

an = -4n - 8

an = -8n - 4

• Question 13
300 seconds
Report an issue
Q. Find the 25th term of the sequence if a1 = 5 and d = 0.5
18
17
15
14
• Question 14
180 seconds
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Q.

The sequence 28, 34, 40, 46, 52, ..., 88 has 11 terms. Find the sum of the 11 terms.

550

638

610

288

• Question 15
180 seconds
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Q.

Find the sum of the arithmetic series described:

2 + (-2) + (-6) + (-10)..., S10

-160

-328

-320

-336

• Question 16
30 seconds
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Q.

Which is the recursive formula for arithmetic sequences?

f(n) = f(n - 1) + d

f(n) = f(1) + (n-1) * d

f(n) = f(n - 1) * r

f(n) = f(1) * rn - 1

• Question 17
30 seconds
Report an issue
Q.

Which is the explicit formula for arithmetic sequences?

f(n) = f(n - 1) + d

f(n) = f(1) + (n-1) * d

f(n) = f(n - 1) * r

f(n) = f(1) * rn - 1

• Question 18
30 seconds
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Q.

Which of the following represents the series $\frac{2}{9}+\frac{3}{16}+\frac{4}{25}+\frac{5}{36}+\frac{6}{49}?$

$\sum_{n=3}^7\frac{n-1}{n+6}$

$\sum_{n=3}^7\frac{n-1}{n^2+1}$

$\sum_{n=2}^6\frac{n}{\left(n+1\right)^2}$

$\sum_{n=2}^6\frac{n}{n^2+1}$

• Question 19
30 seconds
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Q.

At her job, Pat earns $25,000 for the first year and receives a raise of$1,000 each year. The explicit formula for the  $n^{th}$   term of the sequence is  $a_n=25,000+\left(n-1\right)1000$ . Which rule best represents the equivalent recursive formula?

$a_n=24,000+1000n$

$a_n=25,000+1000n$

$a_1=25,000\ ;\ a_n=a_{n–1}+1000$

$a_1=25,000;\ a_n=a_{n+1}+1000$

• Question 20
30 seconds
Report an issue
Q.

Here is a list of Luke’s height (in inches) at his last 3 doctor check ups:  $54.5,\ 57,\ 59.5$ . Is this trend arithmetic or geometric? And what is the common difference or common ratio?