What is the area of a parallelogram with a base of 5/2cm and a height of 3/2cm

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

Find the solution of this system of equation -7x+y=-20 9x-3y=36

What makes a trapezoid an isosceles trapezoid?