Which is the best type of graph to model the speed of a roller coaster over the full two minutes it takes to complete the ride?

What is the measure of x, in degrees

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

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.