How many solutions does the system have? You can use the interactive graph below to find the answer.
\begin{cases} 2x+3y=-6 3x-4y=-12 \end{cases}
⎩
⎪
⎪
⎨
⎪
⎪
⎧


2x+3y=−6
3x−4y=−12

Plz help plz give me the answer

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?