Arithmetic and Geometric Sequences

Name the Sequence:

18, 22, 26, 30, 34.....

• A. Arithmetic

• B. Geometric

• C. Recursive

• D. Explicit

Which kind of sequence has a common ratio?

• Arithmetic
• Geometric

Which kind of sequence has a common difference?

• Arithmetic
• Geometric

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

• 8
• 11
• -11
• -8

What is the common ratio: 5, 25, 125, 625...

• 25
• 20
• 5
• 4

What is the explicit rule for the geometric sequence: 11, 22, 44, 88...

• a_n = 2(11)^n-1

• a_n = 11(2)

• a_n = 11(2)^n-1

Write the explicit formula for the sequence.

216, 72, 24, 8, ...

What is the next term in the sequence 12, 31, 40, 49, ... ?

• 56

• 57

• 58

• 59

What is the explicit rule for the sequence:
11, 22, 44, 88...

• a_n = 2(11)^n-1
• a_n = 11 + 2(n-1)
• a_n = 11(2)^n-1
• a_n = a_(n-1) + 11
  a₁ = 11

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