Three friends agree to save money for a graduation road trip. They decide
that each of them will put $0.25 in the fund on the first day of May, $0.50 on
the second day, $0.75 on the third day, and so on. At the end of May, there will
be in their fund. (Hint: There are 31 days in May.)

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?