Polynomial and Sinusoidal Functions:

Please provide a solution and an explanation.

1.)

The highest tides on Earth occur in the Minas Basin in the Bay of Fundy, Nova Scotia, where tides can reach a maximum height of 15m. The tidal heights for the morning of July 3, 2019 are graphed below. Time (Hours) This graph can be represented by the sinusoidal function, y=asin0.57x+d a. State the period of this function to the nearest hundredth b. State the value of the amplitude to the nearest whole number c. Calculate the height of the tide, to the nearest tenth, at 4.3 hours