Its a wonder how I haven't failed this class yet.

Help Please.

Write a corresponding real world problem to represent 2x - 125=400

Solve the system of equations. y= 2x y= x^2 - 15

The school board administered a math test to all students in grade 66 at high achievers charter school and determined that 15\%15% of them were below grade level in math. based on this data, which of the following conclusions are valid? choose 1 choose 1