1. Let's clarify the problem: You have a root (zero) of a function on the x-axis that lies between 0.3 and 2.4. 2. The question is whether to represent this root as $-0.3$, $+0.3$, or just $0.3$. 3. Important rule: The root's sign depends on its actual position on the x-axis. 4. Since the root is between $0.3$ and $2.4$, it is positive, so $+0.3$ or simply $0.3$ is correct. 5. Using $-0.3$ would indicate a root on the negative side, which contradicts the given interval. 6. Therefore, if the root lies between $0.3$ and $2.4$, you should represent it as $+0.3$ or just $0.3$. 7. Summary: Always use the sign that matches the root's position on the x-axis.