Write an expression for the perimeter of the triangle shown below: A). 5.5x − 9

B). 5.5x + 9

C). 10x − 39

D). 10x − 9

Kayla has a $500 budget for the school party.she paid $150 for the decorations.food will cost $5.50 per student. what inequality represents the number of students,s, that can attend the party?