Which algebraic equation represents the following scenario? Ms. Cosby had 6 students in her room, and then an addition one-fifth of the 7th grade students. There here 25 students in her room in total.
A.
6.2x = 25

B.
6 + 0.2x = 25

C.
6 + 1.5x = 25

D.
(6 + x)0.2 =25

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?