Four students are working in a group and are trying to find a rational number between 1/2 and 7/8 which student has the correct answer and explanation

What is the product? (x2+3y+7) [yy+1)

Which expression is equivalent to 2x^2+7x+4?

Quadrilateral wxyz is on a coordinate plane. segment yz is on the line x+y=7 and segment xw is on the line x+y=3. which statement proves how segments yz and xw are related