1. **State the problem:** We are given the equation $$p = w + 1$$ where $p$ is the total number of pieces Ashley has learned and $w$ is the number of weeks she has taken piano lessons. 2. **Identify what is asked:** We need to find the total number of pieces Ashley can play after 85 weeks of lessons. 3. **Use the formula:** Substitute $w = 85$ into the equation: $$p = 85 + 1$$ 4. **Calculate the result:** $$p = 86$$ 5. **Interpretation:** After 85 weeks of piano lessons, Ashley will be able to play 86 pieces in total.