Y = -27x + 577, where x represents the number of weeks and y represents the amount of money left in her account. After how many weeks will Alma have $145 left in her account?
To solve this problem, plugin 145 where the y is located and then solve for x y = -27x +577 145 = -27x +577 145 -577 = -27x -432 = -27x -432/-27 = -27x/-27 16 = x x = 16 After 16 weeks she will have $145 dollars in her account.
