How do u find the area of this triangular prism?

Find the vertex of the function given below y=x^2-6x+1

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

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if