Free points have a great day

The triangles are similar. what is the value of x? show your work.

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

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?