Sequences and Series

Which sequence is represented by the equation f(n) = 2(7)^n-1 ?

• 7, 14, 28, 56...
• 2, 14, 98, 686...
• 2, 9, 16, 23...
• 7,9,11,13...

Tags

CCSS.HSF.BF.A.2

State if it is arithmetic, geometric or neither. 
243,81,27,9,3...

• Arithmetic
• Geometric
• Neither
• Who knows?

Tags

CCSS.HSF.BF.A.2

Which of the following is an arithmetic sequence?

• 2, 4, 8, 16, 32, . . .
• 4, 16, 28, 40, . . . 
• 5, 10, 20, 40, . . . 
• 100, 50, 25, 12.5, . . . 

Tags

CCSS.HSF.BF.A.2

What is the common ratio for the sequence:
28, 14, 7, 3.5...

• 2
• 1/2
• -14
• -7

Tags

CCSS.HSF.BF.A.2

What is the 50th term of the sequence 3,7,11,15 ?

• 399
• 150
• 153
• 50

What is the 25th term of the sequence 10,12,14,16 ?

• 88
• 252
• 250
• 58

Tags

CCSS.HSF.BF.A.2

Given a₁= 1/2 and r= -5 find a_n

• -5(1/2)^n-1
• (-5/2)^n-1
• (1/2)(-5)ⁿ
• (1/2)(-5)^n-1

Tags

CCSS.HSF.BF.A.2

Create a rule for the sequence:
6, 2, 2/3, 2/9

• a_n=6(1/3)^n-1
• a_n= 6-4n
• a_n= 6(-1/3)^n-1
• a_n= (-1/3)6^n-1

Tags

CCSS.HSF.BF.A.2

Create a rule for the sequence:
-3, 6, -12, 24,,,

• a_n= -3+ 2n
• a_n= -3(-2)^n-1
• a_n= -2(-3)^n-1
• a_n= -3(2)^n-1

Tags

CCSS.HSF.BF.A.2

What are the first 4 terms of...
a_n = 2(-3)^(n-1),      

• 2, -6, 18, -54
• -3, 6, -12, 24
• -6, -12, -24, -48
• -2, -6, -18, -54

Tags

CCSS.HSF.BF.A.2