Identify Arithmetic and Geometric Sequence

Write the explicit equation for the geometric sequence: 15, 45, 135, . . . ?

Write the explicit equation for the geometric sequence:

Write the explicit equation for the geometric sequence:

4, 16, 64...

• t(n) = 3ⁿ

• t(n) = 2ⁿ

• t(n) = 5ⁿ

• t(n) = 4ⁿ

Determine whether the sequence is arithmetic, geometric, or neither.

• arithmetic

• geometric

• neither

Determine whether the sequence is arithmetic, geometric, or neither.

• arithmetic

• geometric

• neither

Find the common ratio: 64, -16, 4, -1, ...

• r = -8

• r = -1/4

• r = -4

• r = 4

Find the common ratio for the geometric sequence.

• 1

• -1

• 7

• -7

Find the common ratio for the geometric sequence.

• -4

• 4

• 1/4

• -1/4

Find the common ratio for the following geometric sequence:

7, -7, 7, -7, ...

• 1

• -1

• 7

• -7

Write an explicit rule for the general term of the sequence 5, 15, 45, . . . ?

• a_n = a_n-1 x 3

• a_n = 5(3)^n-1

• a_n = 3(5)^n-1

• a_n = 5 + (n-1)3