Please show work, thx!

Question 1 [ 0/6 pts 9 3 24 Find the values of , y and z that correspond to the critical point of the function f(x, y) = 2x2 + 7x - y + 4y?. C = y = Z = Question Help: Message instructor D Post to forum Submit Question Question 2 0/8 pts 3 2 24 Let f(r, y) = 1+ 2y - 40ry. List the critical points: The critical point at the origin is a O maximum minimum O saddle point The critical point with positive r value is a O maximum O minimum O saddle point Question Help: Message instructor D Post to forum Submit