Arithmetic or Non-Arithmetic

Identify the common difference.

97, 86, 75, 64, ...

• 8

• 11

• -11

• -8

Identify the common difference.

99, 86, 73, 60, ...

• 8

• 13

• -13

• -8

Identify the first term a₁.

97, 86, 75, 64, ...

• 64

• -11

• 97

• 11

Arithmetic, geometric, or neither?

1, 3, 7, 13, ...

• Arithmetic

• Geometric

• Neither

Arithmetic, geometric, or neither?

4, 9, 14, 19, ...

• Arithmetic

• Geometric

• Neither

Find the common difference:

25, 13, 1, -11, ...

• 12

• -12

• 8

• -8

Create the explicit formula for the sequence:
2, 8, 14, ...
(Hint:  Write your formula and then simplify it.)

• a_n=2+6n

• a_n=-6+6n

• a_n=6n-4

• a_n=4-6n

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

• 14

• 68

• 63

• 71

Carey is organizing her books and putting them on shelves. She put 2 books on the first shelf, 8 books on the second shelf, 32 books on the third shelf, and 128 books on the fourth shelf. What kind of sequence is this?

• Geometric

• Arithmetic

• Both

• Neither