Sequences Retest Review part 2

256, 128, 64, 32, ...

What's next?

• 24

• 18

• 16

• 8

To find the next term in an arithmetic sequence…

• add the common difference d

• multiply by the common ratio r

-21, -16, -11, -6, ...

Is this sequence arithmetic, geometric, or neither?

• arithmetic (common difference d = 5)

• geometric (common ratio r = 5)

• neither (no common difference OR common ratio) neither (no common difference OR common ratio)

Which expression represents this sequence:
2, 8, 14, ...

• 4n

• n + 6

• 3n + 2

• 5n - 2

Each individual number in a sequence of numbers is called what?

• Common difference

• Successive term

• Term

• Geometric term

What are the next 2 terms:
12.7, 19.2, 25.7, 32.2...

• 38.7 and 45.2

• 38.4 and 44.6

• 37.7 and 42.2

What kind of sequence is the pattern 15, 17, 20, 24, 29, ...?

• Arithmetic

• Geometric

• Neither

What are the next 2 terms:
1/3, 2/3, 1, 4/3...

• 2 and 7/3

• 5/3 and 2

• 5/3 and 7/3

• none of the above

Given the recursive formula, find the first four terms:
a_n = a_n-1 + 5
a₁ = -16

• -16, -21, -26, -31

• 5, -11, -27, -43

• -16, -80, -500, -200

• -16, -11, -6, -1

Write the explicit formula for the geometric sequence.

• a_n = 4(3)^n-1

• a_n = 3(4)^n-1

• a_n = -4(3)^n-1

• a_n = 3(-4)^n-1