Which of the following are geometric sequences? check all that apply. a. 2,-2,2,-2,2,-2,2 b. 1,2,4,8,16,32 c. 1,4,9,16,25,36,49 d. 10,5,2.5,1.25,0.625,0.3125

Ineed me i stuck and i don’t want to get it wrong

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29

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?