What is X divided by(-2)=8

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Use the graph of the sine function y=2sinθ shown below

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