Two different squares that can be made using the number 9

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

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 coefficient of the term of degree of degree 5 in the polynomial below