11. which of the following describes the end behavior of the function below? select all that apply.
f(x) = -x + 7x4 - 3
a. as x = 0, f(x) — 00
b. as x = 0, f(x) = -00
c. as x →-00, f(x) > 0
d. as x = -00, f(x) —-00

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?