2. Carlotta hopes to do some surfing on her vacation this year. She wants to gather information about the tides and temperatures of the city she will be visiting. The depth of a river in the city varies depending on the ocean tides. The depth in feet for a given day can be modeled by the function below, where x is the hour of the day. At midnight x = 0, at 1 a.m. x = 1, at 2 a.m. x = 2, and so on. d(x)=3 sin [TT/6(x-4)]+10 a. What was the depth of the river at 6 a.m.? b. What is the minimum depth of the river on the given day? C. At what time is the river 7 feet deep