Suppose y varies directly with x, and y = 40 and x = 5. What is the value of y when x = 2? A)
200
B)
16
C)
10
D)
2/5

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