What divided by 30 is equivalent to 6 divided by 25

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

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)