please Please I need urgent help with this I can put it with the procedure please with the procedure of the following

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 function has the domain x> -11?

Which equation represents h for right triangle abc