. Question 4 0/2 pts An open-top rectangular box is being constructed to hold a volume of 350 in'. The base of the box is made from a material costing 8 cents/in. The front of the box must be decorated, and will cost 9 cents/in. The remainder of the sides will cost 4 cents/in. Find the dimensions that will minimize the cost of constructing this box. Front width: in. Depth: in. Height: in.0 Question 5 v B 0/1 pt Find and classify the critical points of f(a:, y) : 32y + 3m2 292 ly 32. Local maximums: ' ' Local minimums: ' ' Saddle points: ' ' For each classification, enter a list of ordered pairs (x, y) where the max] min] saddle occurs. Enter DNE if there are no points for a classification. 0 Question 6 v B 01'2 F Find and classify the critical points of f(a:, y) : 2mg 3:3 3:92. Local maximums: ' ' Local minimums: ' ' Saddle points: ' ' For each classification, enter a list of ordered pairs (x, y) where the maxi mini saddle occurs. Enter DNE if there are no points for a classification