What is the equation of the quadratic graph with a focus of (2, 0) and a directrix of y = −12? A) f(x) = one twenty fourth x squared minus one sixth x minus thirty five sixths
B) f(x) = x2 − 4x − 35
C) f(x) = negative one twenty fourth x squared plus one sixth x minus thirty five sixths
D) f(x) = −x2 + 4x + 35

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?