21. TIDES The table shown below provides data for the irst high and low tides of

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21. TIDES The table shown below provides data for the irst high and low tides of the day for a certain bay during one day in June. (Example 7) See margin. Tide Height (ft)Time first high tide first low tide 12.95 2.02 4:25 A.M 10:55 A.M. a. Determine the amplitude, period, phase shift, and vertical shift of a sinusoidal function that models the height of the tide. Let x represent the number of hours that the high or low tide occurred after midnight. b. Write a sinusoidal function that models the data. c. According to your model, what was the height of he tide at 8:45 P.M. that night? 29 CAROUSELS A wooden horse o

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