Question

Write and explicit formula for the geometric sequence 25,5,1,1/5

Answer 1

A(n) = a(0) x (1/5)^(n)
Where (n) is the term number and a(0) is the first term
For example, 
a(1) = 25(1/5)
= 5
a(2) = 25(1/5)²
= 1
And so on