A2 - Sequences

Which sequence is arithmetic?

• 4, 8, 16, 32, 64, ...
• 4, 6, 10, 12, 16, ...
• 4, 1, -2, -5, -8, ...
• 4, 2, 1, 1/2, 1/4, ...

Determine whether the sequence is arithmetic, geometric, or neither.

• arithmetic
• geometric
• neither

Determine whether the sequence is arithmetic, geometric, or neither.

• arithmetic
• geometric
• neither

Is the sequence 17, 9, 1, -7, ... arithmetic?

• Yes
• No

Is the sequence -432, 72, -12, 2, ... geometric?

• yes
• no

Given the sequence:

25, 21, 17, 13,...

Which is the correct rule?

• a_n = 4n + 29

• a_n = - 4n + 25

• a_n = - 4n + 29

• a_n = 4n + 25

Identify the common difference (d) for the sequence

97, 86, 75, 64, ...

• 8
• 11
• -11
• -8

Find the 22nd term of the following sequence:
5, 8, 11, ...

• 14
• 68
• 63
• 71

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

• -515
• -490
• -535
• 460

Find the common ratio (r) for the sequence: 4, -16, 64, -256, ...

• r = -4
• r = 2
• r = -2
• r = 4