Problems in screenshots

Promoters of a major college basketball tournament estimate that the demand for tickets by adults is QA = 5,000 - 10P and the demand for tickets by students is Qs = 10,000 - 100P. The marginal cost and average total cost of seating an additional spectator is constant, MC = $10, The promoters want to segment the market and charge adults and students different prices. ~ 1. What is the profit maximizing quantity sold to adults? ~ 2. What is the profit maximizing ticket price for adults? ~ 3. What is the profit generated by the ticket sales to adults? ~ 4. What is the profit maximizing quantity sold to students?~ 5. What is the profit maximizing ticket price for students? ~ 6. What is the profit generated by the ticket sales to students? <