The height, in feet, of the tide t hours after midnight is modeled in the function in the graph. 20 20 10 h A A -10 -20 12 18 a. Is the tide rising or falling at 1:00 AM? Be sure to explain. b. At what time does low tide occur? c. What is the amplitude of the function and give a practical interpretation of your answer. he functic and give a practical interpretation of your answer.