Sequences and Series

What is the common difference inthe sequence -7, -5, -3, -1, … ?

• 1/2

• -1/2

• 2

• -2

Identify the common difference.
97, 86, 75, 64, ...

• 8
• 11
• -11
• -8

The next term of the sequence 2,4,8,16 is

• 64

• 32

• 108

• 20

What is the 7th term in the sequence

7, 11, 15, … ?

• 30

• 31

• 32

• 33

The 6th term in the arithmetic sequence

18, 11, 4, …

• -3

• -10

• -17

• -24

Find the next three terms in the arithmetic sequence: -3, -8, -13, -18, ...

• -20, -24, -28
• -21, -25, -29
• -23, -28, -33
• -24, -29, -32

Find 26th term in the arithmetic sequence: -15, -35, -55, -75, ...

• -515
• -490
• -535
• 460

Find the 26th term in the arithmetic sequence: 20, 26, 32, 38, ...

• 182
• 176
• 170
• -118

Find the 20th term in the arithmetic sequence: 5, 12, 19, 26...

• 145

• 144

• 142

• 138

a₁=5, a₂=11, a₁₅=?

• 95
• 89
• 81
• 159