Answer:
The diver lands on water after 3 seconds.
![3\text{ seconds}](https://img.qammunity.org/2023/formulas/mathematics/college/h6ax2ai3x3bsuxhkxuxhm6opu4sunlqcut.png)
Step-by-step explanation:
Given that the diver stands on a platform 15 ft above a lake.
As shown on the graph, at x=0, height h equals 15 ft.
The diver lands on water at h equals zero.
The time at h=0 is x=3 seconds.
Therefore, the time taken for the diver to land in water is;
![\begin{gathered} x=3-0 \\ x=3\text{ seconds} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/o4ur6bzy8zhq3jtv5dxkw4y3qju6sldn1n.png)