Arithmetic and Geometric Sequences

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

Find the first term of the given sequence:
a₁₄=68
d=3

• 14
• 20
• 26
• 29

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

• 8
• 11
• -11
• -8

Find the 32nd term of this sequence.
34, 37, 40, 43, ...

• 32
• 64
• 127
• 356

Find the 25th term of the sequence if a₁ = 5 and d = 0.5

• 18
• 17
• 15
• 14

What is the 15th term of the sequence an = -3n+50

• 95
• -5
• 5
• -95

What is the 10th term of the sequence an = 20-2n

• 40
• -20
• 7
• 0

Is the sequence 7, 9, 12, 16,... geometric?

• yes
• no

What kind of sequence is the pattern 400, 200, 100, 50, 25, ...?

• Arithmetic
• Geometric
• Neither