Simplify 4(6 - 2x) - 3(3 - 4x)

4x + 15
15 - 20x
15 - 6x

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

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?

Iknow the answer but the calculator doesn't seem to give the right one