Trying to find the value of x​

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.

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

How many terms does the polynomial x^2 y^2 have