Solve for x if, Sin^2x-Sinx= cos^2

Which expressions are equivalent to -6 + 3m

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?

Qrst is a parallelogram. determine the measure of ∠q pls