Please help it's for trig

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

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28