Homework: Arithmetic and Geometric Sequences

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

• 8
• 11
• -11
• -8

Identify the common difference.
3, 7, 11, 15, ...

• 6
• 5
• 4
• 2

The next two terms of the sequence 4,7,10,13 are ....

• 16 and 19
• 15 and 19
• 16 and 18
• 15 and 18

Is the following sequence arithmetic?
1, 4, 9, 16, ...

• YES
• NO

Is the following sequence arithmetic?
21, 13, 5, -3, ...

• YES
• NO

Determine the common difference for the arithmetic sequence
-5, 12, 29, 46, ...

• 7
• 17
• -7
• -17

Identify a₁ and d for the sequence
-5, -2, 1, 4, ...

• a₁ = 3 and d = -5
• a₁ = -8 and d = 3
• a₁ = -5 and d = 3
• a₁ = -5 and d = -3

Find the next three terms in the arithmetic sequence: -33, -24, -15, -6, ...

• -1, 7, 15
• -5, 2, 9
• 3, 12, 21
• -65, -73, -81

Identify the common difference.
3, 7, 11, 15, ...

• 6
• 5
• 4
• 2

Identify the common difference. 
10, 20, 30, 40, ...

• 5
• 10
• 15
• 20