Sarah and Tiffany are in the battery business; they run a firm that produces batteries for electric cars. There are two inputs to production; the production function is f(x1,x2)=x131x132 . You may recall that with this production function, the total cost to produce any output, y , as a function of the input prices, w1 and w2 , is c(y)=2w121w122y32 . Assume that Sarah and Tiffany are price takers in the market for electric car batteries. 8th attempt Part 1 (1 point) Suppose that w1=4 and w2=9 . What is the marginal cost of producing 16 batteries? $ 35.18 Part 2 (1 point) Suppose that the market price for electric car batteries is $144 and that input prices remain the same as in Part 1. How many batteries will Sarah and Tiffany produce? 16 Part 3 (3 points) What is the average cost of production in Part 1? $ What is the average cost of production in Part 2? $ What are the returns to scale in production of electric car batteries? Choose one: A. increasing B. decreasing C. constant D. They change based on the level of production and the combination of inputs