6which expression is equivalent to 2x2 + 7x +4?
f
(2x - 1)(x + 4)
g
(2x + 1)(x - 4)
h
(2x + 1)(x+4)
j none of these

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

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?

With number 11 ( show how you got the answer)