Arithmetic and Geometric Sequences

Geometric Or Arithmetic?

100

Is the sequence geometric, arithmetic, or neither? If possible, determine the common difference or the common ratio.

2, -5, -12, -19, -26, ...

Arithmetic; d = -7

200

Is the sequence geometric, arithmetic, or neither? If possible, determine the common difference or the common ratio.

3, 12, 48, 192, 768, ...

Geometric; r = 4

300

Is the sequence geometric, arithmetic, or neither? If possible, determine the common difference or the common ratio.

6, 8, 15, 20, ...

None

400

Is the sequence geometric, arithmetic, or neither? If possible, determine the common difference or the common ratio.

16, 106, 1006, 10006, ...

None

500

Is the sequence geometric, arithmetic, or neither? If possible, determine the common difference or the common ratio.

45, -15, 5, -5/3, 5/9,...

Geometric; r = -1/3

Arithmetic Sequences

100

Given the sequence below, find the term requested.

{-13, -7, -1, 5, ...}, find a₄₂

233

200

Given the sequence below, find the term requested.

{34, 24, 14, 4, ...}, find a₃₀

-256

300

Given the sequence below, find the term requested.

{2, -5, -12, -19, -26, ...}

-187

400

Use the information below to find the indicated value. 

a₁ = -2      a₁₀=43;  Find d

d = 5

500

Given the sequence below, find the term requested.

a₁ =10 and a₂₁ = 2  ; find a₁₄

-24/5 or 4.8

Arithmetic Series

100

What does the series ask you to do? 

Find the sum!

200

Find the indicated sum for each series

{6, +1 + (-4)+(-9)+....}: S₂₂

-1023

300

Find the indicated sum for each series. 

{(-45)+(-38)+(-31)+(-24)+...}; S₄₄

4642

400

Find the indicated sum for the series. 

{24 +31+38+45+....} : S₉

468

500

#43 on Review

1032

Geometric Sequences

100

What is the ratio for the geometric sequence??

{20, 10, 5, 5/2, ...}

r = 1/2 or r = 0.5

200

Find the indicated term for the Geometric Sequence.

{8, -16, 32, -64, ...} ; 

-1048576

300

Find the indicated term for the Geometric Sequence. 

{6561, 2187, 729, 243, ...}: a₁₁

1/9

400

Find the indicated term for the Geometric Sequence. 

{18, 24, 32, 128/3, ...}; a₆

2048/27

500

Find the indicated term for the Geometric Sequence.

a₁=4  and r=6; Find a₇

186624

Random

100

Solve for x: 

2x+1=15

x = 7

200

What is the acronym to remember trig functions?

SOH-CAH-TOA

300

Ms. Drew has a twin. 

What grade does she teach? OR Where does she teach?

1st grade in Taunton

400

Factor: 

x²+12x+35

(x+7)(x+5)

500

Where did Ms. Drew go to college?

Endicott College