A controversial issue in the sport of professional soccer is the use of instant replay

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?

Write the equation of the circle centered at (10,-2) with radius 2.