Mario sells insurance. His goal is to sell 3 types of insurance to each family on a block. He also wants to sell more than 27 policies. If x is the number of families he needs to sell to, which pair of inequalities correctly represents this problem? A.9x > 27
x>3
B. 9x < 27
x<3
C. 3x >27
x>3
D. 3x < 27
x<9
please helppp

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?