1. Let's start by understanding the problem: You want to know what it means when a general rule expressed in terms of $p$ is asked to be expressed in terms of $l$. 2. In algebra and functions, variables like $p$, $l$, $w$ represent quantities or parameters. A "general rule" is a formula or expression that relates these variables. 3. When asked to express a rule "in terms of $l$", it means you should rewrite the formula so that $l$ is the main variable or the variable on the right side of the equation. 4. For example, if you have a formula $p = 2w + 3$, and you want it in terms of $w$, you solve for $w$: $$p = 2w + 3$$ $$p - 3 = 2w$$ $$w = \frac{p - 3}{2}$$ 5. Similarly, if you have a formula involving $p$ and $l$, and you want it in terms of $l$, you solve the equation to isolate $l$ on one side. 6. This process is called "rearranging" or "solving for a variable" and is important for understanding relationships between variables. 7. In summary, expressing a rule in terms of $l$ means rewriting the formula so that $l$ is isolated and expressed as a function of the other variables.