Pls help I'm too lazy
20 points

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

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

How do i solve uniform motion problems?