How do you answer see think wonder, in a mathematical way

The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

Polynomial that can be factored as (3x-4)(3x+4)

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