What is the solution to the system of linear equations graphed below?

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.

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?