15.1-15.2 Review

Is the sequence geometric? {4, 16, 36, 64, ...}

• Yes

• No

Is the sequence geometric? {1, -5, 25, -125, ...}

• Yes

• No

Write a geometric formula where the first term is 20 and the common ratio is 0.6.

• 
• 
• 
• 

What is the common ratio of the {-2, -4, -8, -16, ...}

• 1/2

• 2

• -1/2

• -2

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

• arithmetic
• geometric
• neither

Tags

CCSS.HSF.BF.A.2

CCSS.HSF.IF.A.3

Find the common ratio: 16, 8, 4, 2, ...

• r = 2
• r = 8
• r = 1/4
• r = 1/2

Tags

CCSS.HSF.BF.A.2

CCSS.HSF.LE.A.2

Is the sequence-4, -12, -36, -108,... geometric?

• yes
• no

Tags

CCSS.HSF.BF.A.2

CCSS.HSF.IF.A.3

Write the nth term rule 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

What is the nth term rule for the sequence:

11, 22, 44, 88...

• A_n= 2(11)^n-1

• A_n= 11x2

• A_n= 11(2)^n-1

Is this a Geometric Sequence? If so, what is r?

• No

• Yes, 1/4

• Yes, -1/4

• Yes, -4