SOLUTION: Describe each pattern: a) 2, 5, 9, 14, ... b) 97, 88, 78, 67, ... c) 1, 11, 111, 1111, ...

Algebra ->  Sequences-and-series -> SOLUTION: Describe each pattern: a) 2, 5, 9, 14, ... b) 97, 88, 78, 67, ... c) 1, 11, 111, 1111, ...      Log On


   

Question 898452: Describe each pattern:
a) 2, 5, 9, 14, ...
b) 97, 88, 78, 67, ...
c) 1, 11, 111, 1111, ...
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
a) A(n)=A(n-1)+n+1
5=2+3
9=5+4
14=9+5
b) A(n)=A(n-1)-n-7
97-9=88
88-10=78
78-11=67