What is the solution to this inequality 2(x-4)+14< = x-1

Find the roots of the equation below. x^2 - 6 + 9 = 0

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?