HELP NO LINKS NO LINKS NO LINKS

Is it true or false i’m trying to pass this test so i can leave school

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

Which expression is equal to (f+g)(x)?