Please help me I'm so bad at math and doing AFDA really doesn't help.. Match each factor to its solution when zero

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

Which of these tables represents a non-linear function?

Hi, can anyone show me how to do this problem? 100 points for this. in advance