A firm produces two types of calculators each week, x of type A and y of type B. The weekly revenue and cost functions (in dollars) are as follows. R(X,y) = 140x + 170y + 0.07xy - 0.07x2 - 0.08y2 C(x,y) =7x + 9y + 20,000 Find Px (1400, 1700) and Py(1400, 1700), and interpret the results. Px(1400, 1700) = Choose the correct interpretation of Px(1400, 1700). O A. Selling 1,400 units of type A and 1,700 units of type B will yield a profit of approximately $56. O B. When selling 1,400 units of type A and 1,700 units of type B, the profit will increase approximately $35 per unit increase in production of type A. O C. When selling 1,400 units of type A and 1,700 units of type B, the profit will increase approximately $56 per unit increase in production of type A. O D. Selling 1,400 units of type A and 1,700 units of type B will yield a profit of approximately $35. Py (1400, 1700) = Choose the correct interpretation of Py(1400, 1700). O A. When selling 1,400 units of type A and 1,700 units of type B, the profit will decrease approximately $13 per unit increase in production of type B. O B. Selling 1,400 units of type A and 1,700 units of type B will yield a profit of approximately $8. O C. When selling 1,400 units of type A and 1,700 units of type B, the profit will decrease approximately $8 per unit increase in production of type B. O D. Selling 1,400 units of type A and 1,700 units of type B will yield a profit of approximately $13.Find all local maxima, local minima, and saddle points for the function f(x,y) = Qezxy. <:> Where does the function f(x,y) = 9e2xy have local maxima? Select the correct choice below and fill in any answer boxes within your choice. '13:? A- The function has local maxima at (Type an ordered pair. Use a comma to separate answers as needed.) {:2- B. The function has no local maxima. What are the values of the local maxima? Select the correct choice below and fill in any answer boxes within your choice. A- The values of the local maxima are (Simplify your answer. Use a comma to separate answers as needed.) C? B. The function has no local maxima. Where does the function f(x,y) = 9e2xy have local minima? Select the correct choice below and fill in any answer boxes within your choice. '33:? A- The function has local minima at (Type an ordered pair. Use a comma to separate answers as needed.) {:3 B. The function has no local minima. What are the values of the local minima? Select the correct choice below and ll in any answer boxes within your choice. A- The values of the local minima are (Simplify your answer. Use a comma to separate answers as needed.) C? B. The function has no local minima. Where does the function f(x,y) = 9e2xy have saddle points? Select the correct choice below and ll in any answer boxes within your choice. '31:? A- The function has saddle points at (Type an ordered pair. Use a comma to separate answers as needed.) C3 B. The function has no saddle points