Tanya has a garden with a trench around it. The garden is a rectangle with length212m221m2, start fraction, 1, divided by, 2, end fraction, start text, m, end text and width2m2 m2, start text, space, m, end text. The trench and garden together make a rectangle with length312m321m3, start fraction, 1, divided by, 2, end fraction, start text, m, end text and width3m3 m3, start text, space, m, end text. Find the area of just the trench.

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?