Hana is packing up her room to move to a new city. Together all the books on her Bookshelf weigh 85 pounds. She wants to divide bucks a month for boxes so that each box will weigh the same amount what is the answer

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Can someone me do math because i am having a breakdown rn because i don’t get it

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2