PLEASE HELP ASAP!! Based only on the given information, it is guaranteed that AB is perpendicular to CD. true or false?

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

How do you determine whether a relationship represented as as graph is linear or nonlinear

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.