Y = 2x – 4 and y = x – 2 need to solve and show work i have a low grade and its only the second 9 weeks

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

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4