Common Ratio
9,54,324,1944, ...
r=6
96,156,216,276, ...
d=60
8,17,26,35, ...
Explicit:?
Find a(12)
Explicit: A(n)=9n-1
a(12)=109
4,32,256,2048, ...
ratio=?
Recursive:?
r=8
Recursive: a(1)=4
a(n)=8*a(n-1) for n greater or equal to 2
What is Ms. A's first plant's name?
Sheryl
17,34,68,136, ...
r=2
10,36,62,88, ...
d=26
a(8)=11, difference=4
Find a(1)
Recursive:?
Recursive: a(1)=-17
a(n)=a(n-1)+4 for n greater or equal to 2
6,18,54,162, ...
Explicit:?
Find a(9)
Explicit: an=2(3)^n
a(9)=39,366
Where did Mrs. Blair get married?
Discovery Park
2,30,450,6750, ...
r=15
77,165,253,341, ...
d=88
a(4)=-3, difference=2
Explicit:?
Find a(27)
Explicit: a(n)=2n-11
a(27)=43
a(2)=-40, ratio=-8
Find a(1)
Recursive:?
Recursive: a(1)=5
a(n)=8*a(n-1) for n greater or equal to 2
What is Ms. A's oldest niece called?
Emily
8,160,3200,64000, ...
r=20
d=56
34,41,48,55, ...
Recursive:?
Explicit:?
Recursive: a(1)=34
a(n)=a(n-1)+7 for n greater or equal to 2
Explicit: a(n) = 7n +27
a(4)=-108, ratio=3
Explicit:?
Recursive: a(1)=-4
a(n)=3*a(n-1) for n is greater or equal to 2
Explicit: a(n)=-4/3(3)^n
What is Mrs. Blair allergic to?
Nuts
18,72,288,1152, ...
r=4
-36,-14,8,30, ...
d=22
a(35)=-16, ddifference =3
Recursive:
Explicit:
Recursive: a(1)=-118
a(n)=a(n-1)+3 for n greater or equal to 2
Explicit: a(n)=3n-121
2,26,338,4394, ...
Recursive:?
Explicit:?
Find a(4)
Recursive: a(1)=2
a(n)=13*a(n-1) for n is greater or equal to 2
Explicit: a(n)=2/13(13)^n
a(40=4,394
What is Ms. A allergic to?
The cold... I know