Sequences Review Week 1

Identify the type of sequence: 40, 31, 22, 13,.....

• Arithmetic

• Geometric

• Neither

Tags

CCSS.HSF.BF.A.2

Identify the geometric sequence

• 5, 4, 3, 2, 1,....

• 5, -5, 5, -5, 10

• 5, 20, 35, 50,.....

• 5, 20, 80, 320,......

Tags

CCSS.HSF.BF.A.2

Which is an example of a pattern that is not arithmetic or geometric?

• 10, 9, 8, 7,...

• 10, 30, 90, 270,....

• 10, 20, 30, 60, 120

• 60, 20, 20/3, 20/9,.....

Tags

CCSS.HSF.BF.A.2

Identify the difference in: 30, 41, 52, 63, 74,....

• 11

• -11

• 44

• -44

Tags

CCSS.HSF.BF.A.2

How do can you always solve for D in an arithmetic sequence?

• subtract a term by the previous term

• subtract a term by the next term

• divide a term by the previous term

• add the first two terms

Tags

CCSS.HSF.BF.A.2

Identify the first term and D in: 30, 40, 50, 60,....

• $a_1$ = 60, d = 10

• $a_1$ = 30, d = 10

• $a_1$ = 30, d = -10

• $a_1$ = 60, d = 10

Tags

CCSS.HSF.BF.A.2

What is the formula for an arithmetic sequence?

• $a_{n\ }=\$ $a_1$ + (n-1)(d)

• $a_{n\ }=\$ d + $a_1$ (n-1)

• $a_{n\ }=\$ $a_1$ + d

• $a_{n\ }=\$ $a_1$ + (n)(d)

Tags

CCSS.HSF.BF.A.2

A team recycles garbage each day, listing the total pounds.

5.5, 8, 10.5, 13, 15.5,... Which would be the correct formula for the arithmetic sequence?

• $a_n$ = 5.5+ (n-1)(2.5)

• $a_n$ = 2.5 + (n-1)(5.5)

• $a_n$ = 2.5 + (n-1)(-5.5)

• $a_n$ = 5.5 + (n)(2.5)

Tags

CCSS.HSF.BF.A.2

Choose all of the ways that work to find the multiplicative ratio (r) in a geometric sequence:

•  $\left(1st\ term\right)\ \left(2nd\ term\right)$  
  

•  $\frac{any\ \ \ term}{previous\ \ \ term}$  

•  $\frac{\left(10th\ \ \ term\right)}{\left(9th\ \ \ term\right)}$  

•  $\frac{\left(1st\ \ \ term\right)}{\left(2nd\ \ \ term\right)}$  

Tags

CCSS.HSF.BF.A.2

Identify the first term and r in the sequence: 90, 60, 40, 80/3, ...

• f(1) = 90, r = 2/3

• f(1) = 90, r = 1.5

• f(1) = 80/3, r = .6

• f(1) = 80/3, r = 3/2

Tags

CCSS.HSF.BF.A.2