Help me find the surface area :)

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

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

In the diagram below,abc is congruent to dec what is the value of x