please answer fast i am in an exam

\fQuestion 8 Calculate y' if xy2 + x2y = exy.Question 9 O pts The total cost of producing x units of a product is C(x) = 3 + v5x + 2. Find the rate of change of the cost and the rate of change of the average cost per unit. O No answer text provided. O No answer text provided. Question 10 0 pts Assume that x and y are both functions of t. If x + y? = 2xy + 1, find dy/dt when y = 0 and dx/dt = 3