what is the equation of the graphed linear model?

y = __x +__

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?

The least common denominator of 4/8 and 11/18

I'm stumped by this question. someone with my math homework