Ocean tides are an example of periodic behavior. at a particular harbor, data was collected over the course of
24 hours to create the following model: y = 1.236 sin / 3x) + 1.798, which gives the water level, y, in feet above
the mllw (mean lower low water) as a function of the time, x, in hours.
a. how many periods are there each day?
b. write a function that gives the time in hours as a function of the water level. how many other times per day
will have the same water levels as those given by the function?