Please circle the answer so that I can better understand the explanation.

Question 3

The equation M(x,y) =67 + 0.7x - 0.By gives the mileage (in mpg) of a new car as a function of tire pressure x (in psi) and speed y (in mph) Find My (34,46) (include the appropriate units) and explain what it means. My (34,46) = Explain what the answer in the previous step means when the tire pressure of the car is 34 psi and the speed of the car is 46 mph. Select the correct choice below and fill in the answer box(es) within your choice A. Mileage is mpg at a tire pressure of psi and a speed of mph. O B. Increasing the tire pressure by one psi and maintaining a speed of mph will increase mileage by mpg C. Increasing the speed by one mph and maintaining a tire pressure of psi will increase mileage by mpg O D. Increasing the speed by one mph and maintaining a tire pressure of psi will increase mileage by mpg E. Increasing the tire pressure by one psi and maintaining a speed of psi will decrease mileage by mpgA 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) = 120x + 190y + 0.08xy - 0.07x2-0.08y2 C(x,y) =9x + 3y +20,000 Find PX(1200,1900) and Py(1200,1900), and interpret the results. Px(1200, 1900) = Choose the correct interpretation of Py(1200, 1900) A. Selling 1,200 units of type A and 1,900 units of type B will yield a profit of approximately $39. B. When selling 1,200 units of type A and 1,900 units of type B, the profit will increase approximately $39 per unit increase in production of type A. C. When selling 1,200 units of type A and 1,900 units of type B, the profit will increase approximately $95 per unit increase in production of type A O D. Selling 1,200 units of type A and 1,900 units of type B will yield a profit of approximately $95. Py (1200, 1900) = Choose the correct interpretation of Py(1200, 1900). O A. When selling 1,200 units of type A and 1,900 units of type B, the profit will decrease approximately $35 per unit increase in production of type B. B. Selling 1,200 units of type A and 1,900 units of type B will yield a profit of approximately $35. O C. When selling 1,200 units of type A and 1,900 units of type B, the profit will decrease approximately $21 per unit increase in production of type B. O D. Selling 1,200 units of type A and 1,900 units of type B will yield a profit of approximately $21.The rate of flow f(t) of a continuous income stream is a linear function, increasing from $3,000 per year when t=0 to $4,000 per year when t=6. Find the total income produced in the first 6 years. The total income produced in the first 6 years is $ Simplify your answer.)Find the consumers' surplus and the producers' surplus at the equilibrium price level for the given price-demand and price-supply equations. Include a graph that identifies the consumers' surplus and the producers' surplus. Round all values to the nearest integer p = D(x) =80 -0.05x; p = S(x) = 20e0.001x What is the consumers' surplus, CS? CS = (Round to the nearest integer as needed. Round all intermediate steps to the nearest integer.) What is the producers' surplus, PS? PS = (Round to the nearest integer as needed. Round all intermediate steps to the nearest integer.) Which one of the following graphs correctly identifies the consumers' surplus and the producers' surplus? O A. O B. O c. 150 AP 100 AP 200- S(X) S(X) S(X) .......... O CS IPS ips D(X) D(X) D(X) 10 10 700 10 1500 950