Unit1 - Review

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

• 8
• 11
• -11
• -8

Is the sequence arithmetic: 17, 9, 1, -7, ...

• Yes
• No

Is this sequence arithmetic, geometric, or neither?

4, 8, 32...

• Arithmetic

• Geometric

• Neither

What kind of sequence is illustrated below?
 400, 200, 100, 50, 25, ...

• Arithmetic
• Geometric
• Neither

What is the common ratio? (pay attention to negatives!)

-9, 27, -81, 243...

• r = -3

• r = 3

• d = 36

• d = -36

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

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

Write the nth term formula: 5 + 11 + 17 + 23 + … + 35

• t(n) = 5 + 6(n – 1)

• t(n) = 5(6)^n-1

• t(n) = 5 + 6n

• t(n) = -1 + 6(n - 1)

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

• 14
• 68
• 63
• 71

The sequence 28, 34, 40, 46, 52, ..., 88 has 11 terms. Find the sum of the 11 terms.

• 550

• 638

• 610

• 288