-9 + 12 = Idk this pls tell me thank u

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

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 of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality