Find the solution of x + 4 = 7 if the replacement set is {1, 2, 3, 4, 5}

What properties allow transformation to be used as a problem solving tool

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.

Equation for the calculation double 2 and then add 5