Zac is making cookies, but he does not have enough brown sugar to make a full recipe. The full recipe calls for 2/3 cup of brown sugar. If Zac has enough brown sugar for 3/5 of the full recipe, how much brown sugar does he have?

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