4. Determine if the statements below correctly describe the equation, 20 + 12x = 240. a. Joanie earns $ 12 per hour, plus a $20 bonus for completing the training program. This
week Joanie earned $240.
b. Isaiah is saving $12 per week from his allowance. After 20 weeks, Isaiah has $240
c. Felix exercises by spending 12 minutes warming up and then running for 20 minutes
He has exercised a total of 240 minutes this month.

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?