Geometric Sequence practice

Determine if the following is a geometric sequence:

4,12,36,108

• Yes

• No

Tags

CCSS.HSF.BF.A.2

Determine if the following is a geometric sequence:

625,125,25,5

• Yes

• No

Tags

CCSS.HSF.BF.A.2

What are the next 3 terms in the geometric sequence:

5,20,80,___, ___, ___

• 320,1280,5120

• 140,200,260

• 20,5,1

• 400,2000,10000

Tags

CCSS.HSF.BF.A.2

What are the next 3 terms in the geometric sequence:

1536, 768, 384, ___, ___, ___

• 192, 96, 48

• 768, 384, 192

• 215, 112, 32

Tags

CCSS.HSF.BF.A.2

Write the rule for the following sequence using the equation

 $a_n=a_1\cdot\left(r\right)^{n-1}$  

-1 , -7, -49, ...

•  $a_n=-1\cdot\left(7\right)^{n-1}$  

•  $a_n=7\cdot\left(-1\right)^{n-1}$  

•  $a_n=-1\cdot\left(-7\right)^{n-1}$  

•  $a_n=1\cdot\left(-7\right)^{n-1}$  

Tags

CCSS.HSF.BF.A.2

• $a_n=400\cdot\left(\frac{4}{5}\right)^{n-1};\ height=131.072\ m$

• $a_n=\frac{4}{5}\cdot\left(400\right)^{n-1};\ height=131.072\ m$

• $a_n=400\cdot\left(-\frac{4}{5}\right)^{n-1};\ height=-131.072\ m$

Tags

CCSS.HSF.BF.A.2