An airline sells all tickets for a certain route at the same price. If it charges 250 dollars per ticket, it sells 5000 tickets. For every 5 dollars, the ticket price is reduced, an extra 500 tickets are sold. It costs the airline a hundred dollars to fly a person. What price will generate the greatest profit for the airline?

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

One positive number is 9 more than twice another. if their product is 95, find the numbers

Can someone tell me if this is perpendicular? !