1. -2x + 4x^2 - 7 - x^2 + 7 - 8x

2. 7ab - bc - 4ab - 5bc

3. 3x^2 - 5x + 7 + 2x^2 + 3x - 9

4. 3r + 2z + 9t + 4r - 5s + t

5. -5xy + 7wz - xy - 5wz

35 points, ! name one pair of congruent sides. a. segments pr and sv b. segments qr and st c. segments rp and ts d. segments pq and vs

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.

Askateboard ramp is in the shape of a right triangle what is the height of the ramp