PLEASE HELP WILL MARK YOU BRAINLIEST! NO FAKE ANSWERS. Is 5x² + 3x - 3 a monomial, binomial or trinomial?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

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?

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?