Paulina sells beef in a competitive market where the price is $6 per kilogram. Her total revenue and total costs are given in the table below. Profit Quantity of beef (kgs.) Total revenue ($) @ Total cost ($) Marginal revenue ($) Marginal cost Marginal profit ($) ($) 4 1 6 6 2 10 12 18 3 15 21 4 24 Instructions: Round your answers to the nearest dollar and include a negative sign if appropriate. a. Fill out the table. b. At what quantity does marginal revenue equal marginal cost? kilograms