In parallelogram PQRS, m<P=x+50 and m<R=2x+10,find m<Q​

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

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?

What does independent variable and dependent variable mean in math?