Sequences

The individual numbers in a sequences are called...

• Common differences

• Successive terms

• Terms

• Geometric terms

Which kind of sequence has a common ratio?

• Arithmetic
• Geometric

Which kind of sequence has a common difference?

• Arithmetic
• Geometric

Is this sequence arithmetic, geometric, or neither?
{26, 22, 18, 14, ...}

• Arithmetic
• Geometric
• Neither

Is this sequence Arithmetic, Geometric, or Neither?
{2, 9, 7, 14, 12, 19, ... }

• Arithmetic
• Geometric
• Neither

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

• 8
• 11
• -11
• -8

What is the common ratio: 5, 25, 125, 625...

• 25
• 20
• 5
• 4

This is an arithmetic sequence. 5, 2, –1, –4, . . .

What is a_{7 (7th term)} ?

• -13

• -11

• -18

• -22

Create the explicit formula for the arithmetic sequence: 2, 8, 14, ...

• a_n=2+6(n-1)

• a_n=2+6^(n-1)

• a_n=6(n-2)

• a_n=14-6(n - 1)

What is a_{5 (5th term)} in the sequence defined as follows? a_n = 5 ⋅ 2^(n-1) 

• a₅ = 160
• a₅ = 40
• a₅ = 10
• a₅ = 80