Please help with the problem on the attachement.

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy. how much will she pay after the discount

What is an equation of the line that is perpendicular to y=-x+3 and passes through the point (4, 12)? enter your equation in the box. basic

The table can be used to determine the solution of equations, 2x − 2y = 6 and 4x + 4y = 28. which solution can be used to fill in both blanks in the table? (2, 5) (5, 2) (5, −8) (−8, 5)