HELP WITH QUESTION 14 AND 15 IF I GET THEM RIG U WILL GIVE BRAINLIEST

What is the probability of rolling a single die greater than 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

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?