Question

Find an equation for the nth term of the arithmetic sequence.

9, 11, 13, 15, ...

Answer 1

Basically you want a formula that displays odd numbers:
(2x +1)
x = 1 generates 3
x = 2 generates 5
x = 3 generates 7

Answer 2

9 + 2(n)

so this is the answer?

Answer 3

Okay I guess that's another way to state the answer.

Answer 4

ok, thank you!