please help economics

Question 39(Munipie Choice Worth 1 points) (05.03 MC) USE the table to answer the question that follows. Quantity of Labor MP of Labor Quantity of Capital MP of Capital 2 45 2 40 What combination of labor and capital would satisfjir the input hiring rule that minimizes the cost of production, tithe mice of labor is $5 and the price of capital is $10? I O 1 unit of labor, 3 units of capital l O 2 units of labor, 1 unit of capital l O 3 units of labor, 2 units of capital l O 4 units of labor, 2 units of capital l O 5 units of labor, 5 units of capital Question 30(Multiple Choice Worth 1 points) (06.04 MC) Use the graph to answer the question that follows. Price ($) S 4 3.5 3 2 D 360 540 Quantity What is the seller's price after the tax? O $2.00 O $3.00 O $3.50 O $4.00 O $5.00Question 32(Multiple Choice Worth 1 points) (03.07 MC) What is true of a firm's production if it operates in a perfectly competitive market with short-run economic profits? O Marginal revenue = demand = marginal cost > average total cost O Marginal revenue = marginal cost = average fixed cost O Average total cost = price = average variable cost O Marginal cost