A diver stands on a platform 15 feet above a lake. He does a dive off the platform and lands in the water below. His height (h) above the lake after x seconds is shown on the graph below. After how many seconds did the diver land in the water?

A diver stands on a platform 15 feet above a lake He does a dive off the platform and lands in the water below His height h above the lake after x seconds is sh class=