An xbox was for $ 300 now its $240 What is the percentage discount being given

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Which of the following circles have their centers in the third quadrant? check all that apply.

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola