Term, coefficient, and exponent of -x^2+2x-2x^2-3x+4+x^2

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Find the actual dimensions of the box. the side length are in meters and integers. the surface area of the box is 104 m2 and volume of the box is 60 m3.

Factor the polynomial by its greatest common monomial factor.