Subtract. write the difference in simplest form (5n - 3) - (-2+7)

Use set builder notation to represent the following set: { -3, -2, -1, 0}

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

What is the frequency of the sinusoidal graph?