18. If the analysts who follow Apple project 2019 sales to increase by 7.4% over 2018, its after-tax profit margin to remain the same, and anticipate a 60% dividend payout ratio, what are the projected retained earnings by the end of 2019? 19. Assuming that Apple's net working capital is expected to vary directly with sales, based on a projected 7.4% sales increase in 2019, what is the projected accounts receivable balance at the end of 2019? 20. If the management of Apple projects that by the end of 2018, it was operating at 62% of capacity, what is its full level capacity of sales