Tina has a pet sitting business. She charges a flat service fee of $30, plus $15 per day for each animal. If one of her customers spent less than $75 on one animal, which of the following inequalities could be used to solve for x, the number of days the customer paid for pet sitting? A.
$15x - $30 < $105
B.
$15x + $30 < $75
C.
$15x < $75
D.
$15x < $105

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?