Arithmetic and Geometric Sequences Expressions

Find the common ratio:

2, 8, 32, 128, ...

• 1/4

• 4

• 1/6

• 6

Find the next term:

100, 65, 30, -5...

• 20

• -20

• 40

• -40

Create the formula for the geometric sequence:
-4, -16, -64, -256...

• a_n = -4(4)^n-1

• a_n = -4(-4)^n-1

• a_n = 4(4)^n-1

• a_n = 4(4)^n-1

What are the first three terms of the sequence defined by the following equation?
a_n = 7 + (n - 1)5

• 7, 35, 175

• 7, 2, -3

• 12, 17, 22

• 7, 12, 17

What is the 8th term in the sequence below?
3, 9, 27, 81, ...

• 19,683

• 6,561

• 2,187

• 729

What is the common ratio of the geometric sequence below?
5, 25, 125, 625...

• 25

• 20

• 5

• 4

What are the first 4 terms of an arithmetic sequence with a common difference of (-6) if the first term is 76?

• 76, 70, 64, 58

• 76, 82, 88, 94

• 70, 64, 58, 52

• 82, 88, 94, 100

Is this sequence arithmetic, geometric, or neither?

-3, -18, -108, -648, -3888

• arithmetic

• geometric

• neither

Create the formula for the geometric sequence: -4, -16, -64, -256...

• a_n = -4(4)^n-1

• a_n = -4(-4)^n-1

• a_n = 4(4)ⁿ⁺¹

• a_n = 4(4)^n-1