2. A swimmer dives off a diving board into the water, swims underwater for a little while, then comes back up to the surface of the water for air. The depth to which the swimmer reaches underwater can be modeled by the function \(h ( t ) = 3 t ^ { 2 } - 6.6 t + 1 \) , where \( t \) is the time in seconds from when the swimmer dove off the diving board, and \( h \) is the depth of the swimmer in feet. Find the average rate of change from \( 0.3 \) seconds to \( 0.8 \) seconds.