Can someone help me with my math assignment?

The question is: You’re the representative on the student council and you’ve been assigned the task of finding a location to host a dance. You’ve narrowed it down to 3 options: Ancient abyss charges a $200 flat fee and $4/person. Beautiful Babylon charges a $99 flat fee and $6/person. Crazy Cleopatra charges a $280 flat fee and $3/person. Use substitution, elimination, or graphing to solve. Write a proposal outlining your recommendations.