Algebraic vs Geometric Sequences

Is the following sequence arithmetic, geometric, or neither?

30, 15, 7.5, ...

• Arithmetic

• Geometric

• Neither

Write the explicit equation for the following sequence:

30, 15, 7.5, ...

• t(n) = 30(2)ⁿ

• t(n) = 30(0.5)ⁿ

• t(n) = 60(0.5)ⁿ

• t(n) = 45 - 15n

Is the following sequence arithmetic, geometric, or neither?

13, 9, 5, ...

• Arithmetic

• Geometric

• Neither

Write the explicit equation for the following sequence:

13, 9, 5, ...

• t(n) = 13 + 4n

• t(n) = 17 + 4n

• t(n) = 13 - 4n

• t(n) = 17 - 4n

Is the following sequence arithmetic, geometric, or neither?

40, 43, 46, ...

• Arithmetic

• Geometric

• Neither

Is the following sequence arithmetic, geometric, or neither?

3, 6, 12, ...

• Arithmetic

• Geometric

• Neither

Is the following sequence arithmetic, geometric, or neither?

-3, 2, 7, ...

• Arithmetic

• Geometric

• Neither

What are the next 3 terms in this sequence of terms? 3, 7, 11, 15

• 18, 22, 26
• 19, 21, 23
• 19, 23, 27
• 18, 21, 24

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

• 8
• 11
• -11
• -8

What is the common ratio for the sequence:
28, -14, 7, -3.5...

• 1/2 (or 0.5)
• - 1/2 (or -0.5)
• -14
• -7