Can someone help me put these in order please?

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