Arithmetic & Geometric Sequences

What is the correct definition or formula for a sequence?

• The sum of the terms in a sequence.

• $a_n=a_1\cdot\left(r^{n-1}\right)$

• A set of numbers with a certain pattern.

• $a_n=a_{n-1}+d$

Tags

CCSS.HSF.BF.A.2

What is the correct definition or formula for a series?

• The sum of the terms in a sequence.

• $a_n=a_1+\left(n-1\right)d$

• A set of numbers with a certain patter.

• $a_n=a_{n-1}\cdot r\ ;\ a_1\ =\$

What is the correct definition or formula for explicit arithmetic formula?

• $a_n=a_1\cdot\left(r^{n-1}\right)$

• $a_n=a_{n-1}+d$

• $a_n=a_1+\left(n-1\right)d$

• $a_n=a_{n-1}\cdot r\ ;\ a_{1\ }=$

Tags

CCSS.HSF.BF.A.2

What is the correct definition or formula for recursive arithmetic formula?

• $a_n=a_1\cdot\left(r^{n-1}\right)$

• $a_n=a_{n-1}+d$

• $a_n=a_1+\left(n-1\right)d$

• $a_n=a_{n-1}\cdot r\ ;\ a_{1\ }=$

Tags

CCSS.HSF.BF.A.2

What is the correct definition or formula for explicit geometric sequence?

• $a_n=a_1\cdot\left(r^{n-1}\right)$

• $a_n=a_{n-1}+d$

• $a_n=a_1+\left(n-1\right)d$

• $a_n=a_{n-1}\cdot r\ ;\ a_{1\ }=$

Tags

CCSS.HSF.BF.A.2

What is the correct definition or formula for recursive geometric sequence?

• $a_n=a_1\cdot\left(r^{n-1}\right)$

• $a_n=a_{n-1}+d$

• $a_n=a_1+\left(n-1\right)d$

• $a_n=a_{n-1}\cdot r\ ;\ a_{1\ }=$

Tags

CCSS.HSF.BF.A.2

What is the correct definition or formula for finite geometric series?

• $a_n=a_1\cdot\left(r^{n-1}\right)$

•  $S_n=\frac{a_1\left(1-r^n\right)}{1-r}$  

• $a_n=a_1+\left(n-1\right)d$

• $a_n=a_{n-1}\cdot r\ ;\ a_{1\ }=$

Tags

CCSS.HSA.SSE.B.4

Identify the following sequence as arithmetic or geometric.

{13, 20, 27, 34,...}

• arithmetic

• geometric

• neither

Tags

CCSS.HSF.BF.A.2

Identify the following sequence as arithmetic or geometric.

{2.4, 3.6, 5.4, 10.8,...}

• arithmetic

• geometric

• neither

Tags

CCSS.HSF.BF.A.2

Identify the following sequence as arithmetic or geometric.

{5, 10, 20, 40,...}

• arithmetic

• geometric

• neither

Tags

CCSS.HSF.BF.A.2