What is another way to summarize this proof? A. Vertical angles are supplementary
B. Angles forming a linear pair are supplementary
C. Vertical angles are congruent
D. Angles are forming a linear pair are congruent

Arandom high school question but a hard one

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.

Two numbers have a sum of -19. one number is x. what expression represents the other number?