Write an explicit formula to represent:

3,5,7,9 ...

a (n) = 3 + 2 (n + 1)

Step-by-step explanation:

Hi, jacob,

Each new term here is obtained from the previous one by adding 2. Thus the "common difference" is 2 and the explicit formula for a (n) is

a (n) = 3 + 2 (n + 1)