Geometric Sequences

What is the common ratio?

• 10

• 100

• 1/10

• 1/100

Which of the following represents the explicit formula for the sequence?

• f(n)= 2 ⋅ 4^n-1

• f(n)= 2 ⋅ 4ⁿ

• f(n)= f(n-1) ⋅ 4

• f(n)= 4n

A sequence has the explicit formula f(x)= 12⋅ 3^x-1. What is the f(2)?

• 12

• 24

• 36

• 48

What is f(2)

• 50

• 5

• 25

• 2

What are the first four terms?

• 3, 30, 300, 3000

• 3, 30, 90, 270

• 10, 30, 90, 270

• 3, 13, 23, 33

f(n)= 5 ⋅ 3^n-1, what is f(9)?

• 32805

• 3280

• 38200

• 328500

f(n)= 12 ⋅ 9ⁿ. What is f(10)?

• 4649045868

• 41841412812

• 1080

• 108