Kai is a wildlife photographer. The following data points represents the number of his pictures that have been published in each local newspaper

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 f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

I'm confused on this could anyone me and show me what i need to do to solve it.