What is the solution for this equation? |-4x +7 | = 15

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !