Solve problem. See EXAMPLE.Height of a Dock A boat is being pulled into a dock with a rope...

Solve problem. See EXAMPLE.

Height of a Dock A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 ft from the dock, the length of the rope from the boat to the dock is 3 ft longer than twice the height of the dock above the water. Find the height of the dock.

EXAMPLE SOLVING A PROBLEM INVOLVING THE PYTHAGOREAN THEOREM