In the case below, write an equation the represents the sentence and uses a variable or variables. In a Red Cross drive, Adam contributed twice as much as Bette, and Cal contributed $4 more than Adam. How much did each person give if their donations totaled $154.00?

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