To determine the amount of money you had in your piggy bank before buying the toy, we can set up the equation based on the information given:
- You had \( p \) dollars initially.
- You spent $13.32, so the money left after the purchase is \( p - 13.32 \).
- You had $25.70 left after buying the toy.
Thus, the equation is:
\[ p - 13.32 = 25.70 \]
Now, let's solve for \( p \):
\[ p = 25.70 + 13.32 \] \[ p = 39.02 \]
Therefore, the correct equation to use is \( p - 13.32 = 25.70 \), and the amount of money in the piggy bank before buying the toy was $39.02.