Geometric & Arithmetic Sequences

idenifying the common difference

100

What is the common difference of

2, 4, 6, 8, 10 ...

d=2

200

What is the common difference of

-7, -4, -1, 2, 5, ...

d=3

300

What is the common difference of

32, 20, 8, -4, -16, ...

d= -12

400

What is the common difference of

134, 128, 122, 116, 110...

d=6

500

What is the common difference of 

-6, 1, 8, 15, 22

d=7

identifying the ratio

100

What is the common ratio of

36, 72, 144, 288, 576..

r= 2

200

what is the common ratio of

-2, 6, -18, 54, -162...

r=3

300

What is the common ratio of

256, 128, 64, 32, 16, ...

r= 1/2

400

What is the common ratio of

0.75, 3, 12, 48, 192, ...

r=4

500

Find the common ratio of 

324,108, 36, 12, 4

r= 1/3

creating equations

100

What is the equation for the geometric sequence

.75, 3, 12, 48, 192

a_n=0.75(4)^n-1

200

write an equation to represent the arithmetic sequence:

-6, 1, 8, 15, 22

a_n=-6+7(n-1)

300

write an equation to represent the geometric sequence

324, 108, 36, 12, 4

a_n=324(1/3)

400

find the equation for the arithmetic sequence

-7, -4, -1, 2, 5

a_n= -7+3(n-1)

500

What is the equation of the geometric sequence

-2, 6, -18, 54, -162...

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

finding the term

100

Find the 2^nd term of the equation

a_n= 4(3)^n-1

a₂= 12

200

Find the 3rd term of the equation

a_n=-7+3(n-1)

a_n=-1

300

fimd the 8th term of the equation

a_n=2(2)^n-1

512

400

What is the 4th term of the equation

a_n=6+7(n-1)

a_n=27

500

what is the 8th term of the equation

a_n=1(2)^n-1

a_n=128