Eric is putting money into a savings account. he starts with $450 in the savings account, and each week he adds $30 . let s represent the total amount of money in the savings account (in dollars), and let w represent the number of weeks eric has been adding money. write an equation relating s to w . then use this equation to find the total amount of money in the savings account after 14 weeks. i need this answer !

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?