How do you write f(x)=|-2x-6| as a piecewise defined function

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

If you could answer these your a life saver