Someone help me 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

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955