Compare and Contrast how you would factor x^2−9 and x^2+9. For full credit, make sure you explain why they are factored differently.

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.