Should students learn alternate interior angles in 8th grade

Find the greatest common factor of the polynomial: 10x^5+15x^4-25x^3 10x^5 x^3 5x^3 5

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e