Unit 5 Test

Which EXPLICIT function describes the sequence 5, 11, 17, 23...?

•  $a_n=5\left(6\right)^{n-1}$ 

•  $a_n=6\left(5\right)^{n-1}$ 

•  $a_n=6n-1$ 

•  $a_n=6n+5$ 

Which EXPLICIT function describes the sequence 3200, 800, 200, 50, ... ?

•  $a_n=0.25n+3200$ 

•  $a_n=3200\left(\frac{1}{4}\right)^{n-1}$ 

•  $a_n=0.25n+6400$ 

•  $a_n=1600\left(\frac{1}{4}\right)^{n-1}$ 

Is this sequence arithmetic, geometric, or neither?

{-5, -3, -1, 1...}

• Arithmetic

• Geometric

• Neither

Is this sequence Arithmetic, Geometric, or Neither?

{2, 7, 3, 8, 4, 9... }

• Arithmetic

• Geometric

• Neither

What is the common ratio of this sequence?
{0.5, -1, 2, -4, 8... }

•  $\frac{1}{2}$  

• 2

•  $-\frac{1}{2}$  

• -2

What is the common difference in this sequence?
{75, 50, 25, 0...}

• 25

• -25

• $\frac{2}{3}$

• $-\frac{2}{3}$

What are the first three terms of the sequence defined by the following equation? 
 $a_n=7n+1$  

• 8, 15, 22

• 7, 8, 9

• 7, 14, 21

• 1, 8, 15

Which sequence is represented by the equation $a_n=3\left(5\right)^{\left(n-1\right)}$  ?

• 3, 9, 27, 81...

• 3, 15, 75, 375...

• 5, 15, 45, 135...

• 15, 75, 375, 1875

What kind of function is this graph?

• Linear

• Exponential

• Quadratic

What kind of function is this graph?

• Linear

• Exponential

• Quadratic