Pls help me quick I will name brainliest

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.

Find the value of the variable and the length of each secant segment.

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?