Arithmetic Sequences/Linear Regression Mini Test

Which equation represents the nth term of the sequence 2, -1, -4, -7, -10,....?

(Hint: Write your formula and then simplify it.)

• $a_n=2n-5$

• $a_n=3n-1$

• $a_n=-3n-10$

• $a_n=-3n+5$

Given the sequence -1, 3, 7, 11,..... find

 $a_{25}$  .

• 103

• 99

• 95

• 91

Is this an Arithmetic sequence? 5, 4.25, 3.5, 2.75

• Yes
• No

Tags

CCSS.HSF.BF.A.2

The next two terms of the sequence 4,7,10,13 are

• 16 and 19
• 15 and 19
• 16 and 18
• 15 and 18

Tags

CCSS.HSF.BF.A.2

The next two terms of the sequence 12,17,22,27 are

• 28 and 33

• 29 and 34

• 32 and 37

• 30 and 35

Identify the common difference. 
10, 20, 30, 40, ...

• 5
• 10
• 15
• 20

Tags

CCSS.HSF.BF.A.2

Identify the common difference.
3, 7, 11, 15, ...

• 6
• 5
• 4
• 2

Tags

CCSS.HSF.BF.A.2

Given the sequence:

25, 21, 17, 13,...

Write the explicit equation that models the sequence.

• a_n = 25+4(n-1)

• a_n = -4n + 25

• a_n = 25-4(n-1)

• a_n = -4+25(n-1)

Create the explicit formula for the sequence:

2, 8, 14, ...

• a_n=2+6n

• a_n=2+6(n-1)

• a_n=2-6(n+1)

• a_n=6+2(n-1)

Find the 32nd term of this sequence.
9, 4, -1, -6, -11, ...

• 81
• -34
• -146
• -225

Tags

CCSS.HSF.BF.A.2