Find the ratio of the students who study french to students who do not study french give your answer in its simplest form

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

Which one ? is the answer and how to find this answer

Which graph represents the parent function of y=(x+2)(x-2)