Write an algebraic expression: x squared less than 15

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

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.

Which expression converts 45 degree to radians