how do you solve this?

Paulina sells beef in a competitive market where the price is $5 per kilogram. Her total revenue and total costs are given in the table below. Quantity Total Total Profit Marginal Marginal Marginal of beef revenue cost revenue cost profit (kgs . ) ($ ) ($) ($ ) ($ ) ($ ) ($) 0 0 4 1 5 8 2 10 13 3 15 19 4 20 27 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? kilogram