Calculate the total payback for a $2,500 loan at 10% annual interest for two years. A. $1,021.80
B. $2,043.60
C. $1,384.80
D. $2,769.60​

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