Write 2 expressions that represent the areas of 4 triangles

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.

What is 0.000008 meters in scientific notation

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?