Revisit Exponential Functions and Geometric Sequences

Select the exponential function that matches the geometric explicit formula.

Select the geometric explicit formula that matches the exponential function.

Select the geometric explicit formula that matches the exponential function.

Given the sequence: 125, 25, 5, .... Write the rule a_n using the geometric sequence formula:

• a_n = (125)(1/5)^(n-1)

• a_n = 625(1/5)^(n-1)

• a_n = 625(5)^(n-1)

• a_n = 125 + 5n

What is the 9^th term in a geometric sequence with a common ratio of 2 and a first term of 3?

• 384

• 768

• 1,536

• 27

What does r represent?

• Radical

• Common difference

• Common ratio

Find the common ratio for the geometric sequence.

• 10

• 1/2

• 2

• 4

Is the sequence -432, 72, -12, 2,...geometric?

• yes

• no

What are the next 3 terms in the following geometric sequence:

512, 256, 128, ___, ___, ___, ...

• 1024, 2048, 4096

• 32, 8, 2

• 64, 32, 16

• 92, 66, 38

This image shows how a certain bacteria grows in a petri dish. What is the common ratio of this sequence?

• 4

• 3

• 2

• 6