I think This isnt math but- no fakes

7x+8y=-18, 4x-9y=-3 solve the system of equations

The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cone's base is 5 centimeters, and its height is 10 centimeters.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)