# Finding the Interest Compounded with Bank Advertising Yield

A bank is advertising 9.5% accounts that yield 9.84% annually. How often is the interest compounded?

I've been trying to look for the formula for this; it doesn't seem to be effective rate:

$$ER = (1+i)^m - 1$$

or Nominal Rate

$$i = NR/m$$

What should I be using?