1. The marginal revenue associated with the 3rd unit is? 2. The marginal revenue associated with the 3rd unit is 3. The marginal revenue associated with the 6th unit is 4. The total revenue associated with the 9th unit is Use the table below for the following questions: A table of sales, total revenue, and marginal revenue. Q (sales) Total revenue Marginal revenue 15 15 28 13 40 50 10 5 57 55 -2 50 -5 10 10 28 -12