The chart shows the marginal revenue of producing apple pies. A 3-column table titled The return on pie production has 8 rows. The first column is labeled Pies produced per day with entries 0, 1, 2, 3, 4, 5, 6, 7. The second column is labeled Total revenue with entries blank, 10, 20, 30, 40, 50, 60, 70. The third column is labeled Marginal revenue with entries blank, 10, 10, 10, 10, 10, 10, 10. According to the chart, the marginal revenue decreases by ten dollars as production increases. increases by ten dollars as production increases. falls to zero dollars as production increases. remains the same as production increases.