A rectangle has the dimensions shown. The area of the rectangle would be represented by which type of expression? linear expression quadratic expression exponential expression rational expression

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0