Arithmetic Sequence and Series Pretest

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

• 5
• 10
• 15
• 20

Tags

CCSS.HSF.BF.A.2

Is the sequence arithmetic?

17, 9, 1, -7, ...

• Yes

• No

Tags

CCSS.HSF.BF.A.2

Find the next three terms in the arithmetic sequence:

-33, -24, -15, -6, ...

• -1, 7, 15

• -5, 2, 9

• 3, 12, 21

• -65, -73, -81

Tags

CCSS.HSF.BF.A.2

Find the common difference: -18, -23, -28, -33, ...

• d = -5
• d = 5
• d = -3
• d = 3

Tags

CCSS.HSF.BF.A.2

Find a₂₆ in the arithmetic sequence: -15, -35, -55, -75, ...

• -515
• -490
• -535
• 460

Tags

CCSS.HSF.BF.A.2

Find a₂₀ in the arithmetic sequence: 5, 12, 19, 26...

• 145
• 144
• 142
• 138

Tags

CCSS.HSF.BF.A.2

Write the recursive rule for the arithmetic sequence
82, 76, 70, 64, ...

• a₁=82; a_n = a_n-1-6
• a₁=64; a_n = a_n-1-6
• a₁=82; a_n = a_n-1+6
• a₁=64; a_n = a_n-1+6

Tags

CCSS.HSF.BF.A.2

Write the recursive rule for the arithmetic sequence
-49, -35, -21, -7, ...

• a₁=-49; a_n = a_n-1 + 10
• a₁=-7; a_n = a_n-1 + 14
• a₁=-49; a_n = a_n-1 + 14
• a₁= -49; a_n = a_n-1 -14

Tags

CCSS.HSF.BF.A.2

A sequence is shown below:

2, 5, 8, 11, ...

Which explicit formula can be used to model the sequence?

• a_n = 3 - 11(n - 1)

• a_n = 2 + 3(n - 1)

• a_n = 11 - 3(n - 1)

• a_n = 3 + 2(n - 1)

Tags

CCSS.HSF.BF.A.2

Write the formula for the following sequence 
3,8,13,18...

• 5+3(n-1)
• 3+5(n-1)

Tags

CCSS.HSF.BF.A.2