What do you set each term equal to in order to solve for all of the "roots" of a function?​

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?

Which point is a solution to y s 4x + 5?

Someone me! if you’re smart you can solve this!