arithmetic and geometric sequences and series

find the first 6 terms; An=2n-4

• -4, -2, 0, 2 , 4, 6

• -2, 0, 2, 4, 6, 8

• -2, -6, -10, -14, -18, -22

• 0, 2, 4, 6, 8, 10

Tags

CCSS.HSF.BF.A.2

state the pattern, next term, and the rule for the nth term.

-15, -24, -33, -42

• Arithmetic, -51, An=-9n-6

• geometric, -70, An=-7n+2

• geometric,-51, An=-9n-6

• arithmetic, -70, An=-7n+2

Tags

CCSS.HSF.BF.A.2

state the pattern, next term, and the nth term:

4.8, 5, 5.2, 5.4, ....

• geometric, 5.6, An=4.6n+0.2

• Arithmetic, 5.8, An=4.6n+0.2

• geometric, 5.6, An=0.2n+4.6

• Arithmetic, 5.6, An=0.2n+4.6

Tags

CCSS.HSF.BF.A.2

write a rule for the nth term then find a13:

-6, -4, -2, 0, ...

• rule-An=4n-16, A13=27

• rule-An=2n-8, A13=27

• rule-An=2n-8, A13=18

• rule-An=4n-16, A13=18

Tags

CCSS.HSF.BF.A.2

write rule for nth term then find A14:

-1.4, -3.7, -6, -8.5, ...

• rule-An=2.3n+0.9, A14= -31.3

• rule- An=2.3+0.9, A14=33.6

• rule-An=0.9n-2.3, A14=31.3

• rule-An=0.9n-2.3, A14=33.6

Tags

CCSS.HSF.BF.A.2

find the rule for the nth term then find A9:

-1, -1/3, 1/3, 1, 5/3, ...

• rule- An=5/3n-2/3. A9=11/3

• rule- An=2/3n-5/3, A9=13/3

• rule- An=2/3n-5/3, A9=11/3

• rule- An=5/3n-2/3. A9=13/3

Tags

CCSS.HSF.BF.A.2

write a rule nth term of the arithmetic sequence:

A16=69 A18=81

• rule- An=4n+9

• rule- An= 5n+9

• rule-An=5n+4

• rule-An=4n+5

Tags

CCSS.HSF.BF.A.2

tell if the sequence is arithmetic, if yes state the pattern and find the next term.

-78, -82, -86, -90, -94, ...

• not arithmetic

• arithmetic, difference of -4, A6=-98

• arithmetic, difference of 4, A6=-98

Tags

CCSS.HSF.BF.A.2

tell if the sequence is arithmetic, if yes state the pattern and find the next term.

1/2, 5/6, 7/6, 3/2, 11/6, ...

• not arithmetic

• arithmetic, difference of 2/3, A6=13/6

• arithmetic, difference of 1/3, A6=13/6

Tags

CCSS.HSF.BF.A.2

write the first 3 terms of the sequence:

f(n)=n/2n-1

• f(1)=1, f(2)=2, f(3)= 3

• f(1)=1, f(2)=0.4, f(3)= 0.6

• f(1)=1, f(2)=0, f(3)= -1

Tags

CCSS.HSF.BF.A.2