Paulina sells beef in a competitive market where the price is $6 per kilogram. Her total revenue and total costs are given in the table below. Quantity Total Total Profit Marginal Marginal Marginal of beef revenue cost revenue cost profit (kgs . ) ($) ($) ($) ($) ($) ($) 0 0 4 1 6 6 2 12 10 3 18 15 4 24 21 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