What is the nth term for the quadratic sequence 4,9,16,25,36

Select a graph that have an equation with a < 0

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 a is a nonzero real number then the reciprocal of a is