3pounds is equal to how many kilograms

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

If f(x)=x+7 and g(x)=1/x what is (fog)(x)