Please help me with this question :))

What is the range for 31,39,29,34,37,24,36,33,34,28

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

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