Someone please help me with the questions

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 of these tools or constructions is used to inscribe a hexagon inside a circle?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10