If x represents time, the average rate of change of the function f(x) in the first three seconds is a: -20 b: 20 c: 15 d: -15

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

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x

The floor of a building consists of 3000 tiles which are rhombus shaped and each of it's diagonals are 45 cm and 30 cm in length. find the total cost of polishing the floor, if the cost per m² is rs. 4.