Arithmetic and Geometric Sequences Recursive and Explicit Formulas

Which kind of sequence has a common difference?

• Arithmetic

• Geometric

Is this sequence arithmetic, geometric, or neither?
{26, 22, 18, 14, ...}

• Arithmetic

• Geometric

• Neither

Identify the common difference.
97, 86, 75, 64, ...

• 8

• 11

• -11

• -8

Which sequence is an arithmetic sequence?

• 3, 6, 2, 7, ...

• 3, 6, 12, 24, ...

• 3, 6, 10, 15, ...

• 3, 7, 11, 15, ...

• A.
• B.
• C.
• D.

• A.
• B.
• C.
• D.

What is the recursive form for the following sequence
3, 15, 75, 375, 1875...

• a_n= 5*a_n-1

• a_n= (1/5)*a_n-1

• a_n= a_n-1+5

• a_n= a_n-1 - 5 

Which of the following EXPLICIT formulas would model the same sequence as defined by the recursive formula given below?

In a geometric sequence, a₄ = −9, a₅ = −27, and a₆ = −81. What is the recursive formula for this sequence?

• 
• 
• 
• 

Which recursive equation below would describe the same set of values as the explicit equation above?