Please need an answer asap

Given that x and y are functions of time, find the indicated rate of change dx Find -. when y = 1 and - =3, given that x* = 9y# + 72 at = (Round to two decimal places as needed.) Given that x and y are functions of time, find the indicated rate of change dx Find - when x = 3 and -7 = - 2, given that x* + y* = 162 (Round to two decimal places as needed. Given that x and y are functions of time, find the indicated rate of change. dx Find -, when x = 6, y = 2, and - - 1, given that xy = x + y. (Round to one decimal place as needed.)