A company charters a party boat that normally costs $56 per person. A group discount reduces the fare by $0.70 for each ticket sold. The more tickets sold, the lower is the per-person fare. The maximum capacity of the boat is 80 people, including the crew of 10 people. What size of group would maximize the boat company's revenue? SOMEONE PLEASE HELP

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a.m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum.how many seats does the larger van have?

How do you use the elimination method for this question? explain, because i really want to understand!