Geometric Sequences

What does r represent in the explicit formula for a geometric sequence?

• Radical

• Common Ratio

• Common Difference

• 10

• 1/2

• 2

• 4

• r = 5

• r = -5

• r = 1/5

• r = -1/5

• Yes

• No

Is this sequence Arithmetic, Geometric, or Neither?

2, 9, 7, 14, 12, 19, ...

• Arithmetic

• Geometric

• Neither

Which sequence is an arithmetic sequence?

• 3, 6, 2, 7, ...

• 3, 6, 12, 24, ...

• 3, 6, 10, 15, ...

• 3, 7, 11, 15, ...

Which sequence is a geometric sequence with a common ratio of 2?

• 5, 3, 1, -1, ...

• 5, 7, 9, 11, ...

• 5, 10, 20, 40, ...

• 5, 15, 45, 135, ...