At dolphin bay the depth of the water at the end of the jetty is 6 meters at high tide, and 3 meters at low tide. High tide occurs at 11am and low tide occurs at 5pm.

a.) Using the information given find a trigonomatric function which models the depth of the water at the end of the jetty.
b.) Find the depth of the water at 12:30pm
c.) A boat moored at the end of the jetty needs to leave the bay before the depth of the water fals to 4 meters. At what time after the 11am high tide will the depth of water be 5 meters?

Question

At dolphin bay the depth of the water at the end of the jetty is 6 meters at high tide, and 3 meters at low tide. High tide occurs at 11am and low tide occurs at 5pm.

a.) Using the information given find a trigonomatric function which models the depth of the water at the end of the jetty.
b.) Find the depth of the water at 12:30pm
c.) A boat moored at the end of the jetty needs to leave the bay before the depth of the water fals to 4 meters. At what time after the 11am high tide will the depth of water be 5 meters?