when v - Exponential Functions with Differential Equations Homework 1) If dx ay = 3y and y = 5 when x = 0, what is the value of x when y = 3? C : 5 = 7 y = 5e 3x 3=5e 3x In 3 = In 5p 3x 3 3 fv is proportional to y. When t = 0, y = 4 and when t = 3, y =