Expand and combine like terms. (3-8w^2)^2

Whats the name of the vertical axis

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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.