7-8 pls

7. AppsRUs has a very high gross margin at 90%. Their ARPU (average revenue per user) is $10 per month. Each month they spend $50,000 on R&D, $200,000 on marketing, $100,000 on other operating expenses. How much revenue do they need to make to reach positive operating profits each month? 8. Staying with AppsRUs, how many active users do they need each month to reach profitability