I dont know how to do this​

One positive number is 9 more than twice another. if their product is 95, find the numbers

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

Solve this problem! extra ! 3025/5.5 = a/90.75 / = fraction