Write the following as an algebraic expression. simplify if possible.
subtract 3y-5 from y-7

What is the value of x? enter your answer in the box. photo attached.

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

Average acceleration: i have no idea how to do this.