Geometric Sequences Find the Common Ratio

Find the common ratio for the geometric sequence.

• 10
• 1/2
• 2
• 4

Write the explicit formula for the geometric sequence.

• a_n = 10(2)^n-1
• a_n = 2(10)^n-1
• a_n = 10(2)ⁿ
• a_n = 2(10)ⁿ

Find the common ratio for the geometric sequence.

• 2
• -2
• 1/2
• -1/2

Write the explicit formula for the geometric sequence.

• a_n = 2(100)^n-1
• a_n = 100(2)^n-1
• a_n = 100(1/2)^n-1
• a_n = (1/2)(100)^n-1

What is the 14th term of the geometric sequence?

• 14,348,907
• 4,782,969
• 1,594,323
• 45

Is the sequence 7, 9, 12, 16,... geometric?

• yes
• no

What kind of sequence is the pattern 400, 200, 100, 50, 25, ...?

• Arithmetic
• Geometric
• Neither

Find the common ratio for the geometric sequence.

• 10
• 1/2
• 2
• 4

What is the common ratio for the sequence:
3, 15, 75...

• 12
• 1/5
• 5

Find the common ratio for the geometric sequence.

• -4
• 4
• 1/4
• -1/4